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Migrating React And Native Apps To React Native - Everything You Need To Know

2022-04-19
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Table of contents

Introduction

If you are here, you probably know why it is good to migrate your apps to React Native. But, no matter if:

  1. you are at the planning stage,
  2. you’ve already started your migration and something went wrong,
  3. or you want to evaluate if you migrated your app well,

it’s good to take a step back and listen to what experts have to say about it. 

In this article, you’ll read about:

How to properly migrate from Native to React Native?

Greenfield development

  • What is greenfield software development?
  • Potential risks of greenfield development
  • What should you keep in mind while planning migration with a greenfield approach?
  • Greenfield - summary

Brownfield development

  • What should you keep in mind while planning migration with a brownfield approach?
  • Brownfield - summary 
  • How Callstack uses brownfield


Migrating React web app to React Native app

How Callstack uses brownfield

React web to React Native. Migration or Conversion? 

Migration to React Native - wrap-up

How to properly migrate from Native to React Native?

The migration process can be done in two ways: with a greenfield or brownfield software development. Let’s go through those two approaches, point out the main differences between them, and describe pros and cons of each one to make you choose the right approach for your product and team. 

Greenfield development

What is greenfield software development?

In short, greenfield development involves creating an application in a totally new environment, from scratch with no legacy code around. In this approach, we start fresh with no restrictions or dependencies. This approach allows us to migrate our app much faster than with the brownfield approach but also carries some risks that cannot be overlooked. 

Potential risks of greenfield development

Usually you don’t want to “kill” the native app and then build the React Native from scratch. It’s much better to let the “old” app do its job until the new, cross-platform one is ready to take its place. And this maintenance of the “old” app accompanied by the development of the new one can become overwhelming for your team. In consequence, the new app can have more bugs and errors than it would with a well-rested dev team. That’s why migration with a greenfield approach should be carefully thought out and planned in great detail, with a special focus on the features map. 

What should you keep in mind while planning migration with a greenfield approach?

When planning a migration to React Native with the greenfield approach, it is crucial to create a features map. It takes a lot of effort (and, in consequence, money) but will not allow you to forget about any feature while working on migration.

This is what you should start from - take a look at your current app, create a features map and a solid documentation of the project.

Typical problem we encounter in the wild which slow down the migration are:

  • The code has no official documentation.
  • Comments in code describing the code but not the reasoning behind it.
  • Documentation is scattered across the teams.
  • It’s hard to find a single owner of a feature or the product as a whole, sometimes there are multiple people (managers, developers, etc.) that only combined have a whole picture.
  • Unused legacy code, obfuscating the feature contents.

What we suggest is to design user stories - an informal, natural language description of one more feature of a software system. User story describes the feature from an end-user perspective, the type of this user, what they want and why. Simply put, user stories are stated ideas of requirements that express what users need, the “to-do” lists that help developers determine the steps along the project path. 

The main purpose of the user story is to define how particular feature, functionality, etc., will deliver a value back to the customer. 

Most of the user stories follow the same, simple scheme:

agile user story scheme

The role defines the end-user, an actual human who interacts with the system. It should be described as specific as possible. 

The action stands for the behavior of the system and should be written as an action. In the action part, the system is implied and does not get written in the story, which should be written in an active voice. 

The benefit should present a real-world result of the action and describe the value behind the interaction with the system for the users. 

Well-prepared and thought out user stories help us to stay focused on end users, their real needs and expectations towards our app. Thanks to the simple and consistent format, user stories allow developers’ teams to deliver quality software faster and better satisfy their end-users’ needs. 

There is a saying that the written code is a reflection of the team that wrote it. Food for thought.

Greenfield - summary

Wrapping up all the pros and cons of greenfield software development:

Pros:

  • Greenfield is much faster than brownfield. 
  • Can be started with a predetermined direction.
  • A lot of possibilities to add improvements to existing tech solutions.

Cons:

  • Requires more effort from the team.
  • High risk of bugs and errors.
  • Can cause difficulties while choosing the right approach with so many development possibilities.
  • Focuses a lot of development forces on one project.
  • Risk of “people problems” - dividing team into “legacy app team” and “new app team”  usually slows down feature development and may also be a “people problem” (if the legacy team is not comfortable working with legacy tech for a while).

Brownfield development

Brownfield software development seems to be a great approach to migrate apps from one framework to another because it allows to integrate new features (cross-platform in our case) with React or native apps maintaining their business continuity

Speaking of which, brownfield allows us to gradually transition native apps into cross-platform ones feature by feature, screen by screen, without rewriting the app from scratch. We can integrate new inclusive cross-platform components into a working app and replace its existing native or React pieces one by one. What’s the best here, common cross-platform features work the same on all platforms with negligible impact on performance.

What should you keep in mind while planning migration with a brownfield approach?

You need to be aware that the whole process takes longer than rewriting an app from scratch as in the case of the greenfield approach. In brownfield, you will have to use the knowledge about the native platform from which you are migrating from and the architecture of the whole product to know how to “plug” into this architecture or create some bindings between the architecture and the migrated part. 

Also, during the migration, it may be necessary to share some data between React Native and native which also may cost you much work and effort. Whereas, when it comes to the features map - it’s more like a “nice-to-have” that allows to rewrite new screens incrementally rather than a necessary part of the plan. With this approach the map, or documentation, can even be created incrementally alongside the migration, but prior to dev work.

To sum up  the main differences, with the brownfield approach the changes are smaller and the whole process takes longer when compared to greenfield, but the risk of bugs and errors is much smaller and they are easier to find and fix during rewriting the screens. 


Brownfield - wrap up 

Wrapping up all the pros and cons of brownfield software development:

Pros:

  • Once written cross-platform component works the same on every platform
  • No risk of inconsistent platform-specific features. 
  • Gradual migration process with no harm for the business continuity of the app.
  • Lower development costs - one team works on app for multiple platforms.
  • Live and OTA updates. Add features and updates without going through the app store update cycle. 

Cons:

  • Takes longer than with greenfield approach.
  • Requires native knowledge to properly proceed the project.
  • Can be more expensive in the final count.

implementing cross-platform features into your native apps

How Callstack uses brownfield

Over the years, by solving a list of our clients’ issues and developing an Open Source library dedicated to brownfield development, we have mastered our own approach that has proven to provide the best possible developer experience with the least amount of effort. 

We usually tackle components screen-by-screen and register them with the “AppRegistry.registerComponment” API. Thanks to that, the native interface can locate certain React Native components and load it with appropriate initial props. Then the certain set of components is packaged in a platform-specific way to ensure maximum integration that does not depend on React Native.

On iOS, we want to generate a static library (file with “.framework” extension) with all wrapped components being part of the public interface. On Android, the process is similar and results in a “fat aar” file. Thanks to that, native developers can use components that are part of the public interface without explicitly depending on React Native - no “node_modules” are needed and developers don’t even need “node” to be installed on their machines. In most cases, such solutions are used for embedding React Native screens within native apps, which is the most common brownfield strategy for migrating from fully native apps to React Native ones. 

But, at the end of the day, everything is a React component. Thus that abstraction can be further extended to enable additional strategies for sharing complex components between different environments and providing layout consistencies. 

Thanks to that, Android and iOS developers can move faster by composing the interface from existing UI components that work and look the same way in both native and React Native apps. This guarantees consistency within applications created with the brownfield approach, where both native and React Native screens co-exist for the period of the migration, as well as with other fully native apps, where React Native implementation is not on the roadmap yet.

React web to React Native. Migration or conversion? 

As we’ve seen a lot of queries regarding migration of web apps built in React to React Native, we decided to put some light on it. 

First of all, it is not a type of migration as we described above. It is more like expanding your React web app with cross-platform abilities. So, in this case the word “conversion” is more proper than migration. 

Most of the React web apps out there are written with platform-specific “host” components used right next to composite components. This makes things easy for web developers, because the JSX we write resembles HTML a lot.

 

However, with this approach we’re not fully utilizing the possibilities that JS bundlers present to us in terms of platform-specific code. The MyButton component can only be rendered in the environment that understands <rte-code>`div`<rte-code> and <rte-code>`span`<rte-code> elements, e.g. DOM, or testing environment, but nowhere else.

If we converted this component to embrace React’s component model:

we could render it on virtually any platform that React supports, e.g. Android or iOS thanks to the React Native renderer. We’d implement our leave components, like <rte-code>“SecondaryText.js<rte-code>”, rendering a `span` element by default. And provide additional implementation for React Native in <rte-code>“SecondaryText.native.js”<rte-code>. A bundler that we use, be it Metro or Webpack, will be smart enough to import the correct implementation for a specific platform.

And that’s how we go with every component that has HTML declared and web APIs used. 

You may think that’s “too much overhead” or “why would I create extra components”, but listen to Sebastian Markboge for a moment:

That’s just React. And it’s not only beautiful, but also immensely powerful.

Every time we use a platform-specific component which is not from the lowest level of the component tree, like part of the icon, button, etc., and we use it in inappropriate places in the app, we increase the scope of the future migration on every platform which is not web.

Hence, there were some popular solutions that allowed developers to not rewrite any components in React (or any other library) and still render the app on mobile. Even so, it wasn’t the “classic” app but only a WebView - a small browser where the web app was working. 

The same applies to the electron apps like Discord or Slack. There are web apps that render on the browser with the help of electron so there is no need to rewrite their components in React. 

On the flip side, if we started our web app with React Native (thanks to the <rte-code>react-native-web<rte-code> project), we wouldn’t need such big rewrites at all. We’d only need to adjust our components here and there to render as expected per platform, but it would work out of the box. That’s because React Native renderer doesn’t allow any magical host components like <rte-code>“div”<rte-code> or <rte-code>“button”<rte-code> in its JSX. 

All platform-specific components, like View or Text, need to be either imported from the “react-native” package or from 3rd party native components. 

A nice thing about importing in JavaScript is that we need to define from where we import. 

And the “place” we import from is a subject to aliasing for our bundlers. We can configure Webpack to alias <rte-code>“react-native”<rte-code> to <rte-code>“react-native-web”<rte-code> which understands Views and Text and provides web implementation.

Styling

One of the trickiest problems to solve when converting web apps to React Native is styling. If you’re using Styled Components or Emotion, you’re partially in luck, because they support React Native. Why partially? Because the overhead in creating extra layout components is noticeable. It’s usually negligible, but you may need to jump into the profiling tools more often. 

If, against all the good practices out there, you styled your app with inline styles, you’re in luck as well! React Native supports it. It has a performance impact on composite components, but it’s nothing that you couldn’t fix for the most annoying places.

If your app, however, is styled with CSS (or SCSS or else for that matter), you’ll need to reimplement the styling from scratch. Thankfully, you can automate a lot of it thanks to Styled Components’ css-to-react-native library: https://www.npmjs.com/package/css-to-react-native

We highly recommend watching this great talk from Radek Pietruszewski of Nozbe on sharing code between React and React Native apps:

Again, if we started with React Native model (through react-native-web), we almost didn’t need to worry about styles at all. Almost, because native and web platforms are different and need special handling in some cases. But the majority of “static” styles could stay intact. 

Migration to React Native - wrap up

To sum everything up, basing on our successful migration of the Kiwi.com app where we used brownfield approach, we can distinguish the following success points of the migration to React Native:

  • React Native screens load without delay.
  • Navigation works as expected.
  • Native code can be reused in React Native.
  • Everything in one repository and React Native version in sync.
  • CodePush is working which means not waiting for the App Store anymore when there are JavaScript changes.
  • The app keeps a natural native feeling and, when we expand React web app, it doesn’t have to rely on WebView. 

To achieve that, we need to prepare a detailed plan of the migration including features map (must have in greenfield approach), and have a clear idea of what we want to achieve, in what time and how much effort we can dedicate to the migration process.

Also, it is important to prepare a solid and detailed documentation of the migrated app before developers start working on rewriting screens. Without clear app structure, the risk of bugs or even accidental omission of some features increases which leads to increase in costs of the migration. 

To make full use of all the advantages of migrating native or React app to React Native, we need to remember to “clean up” the app from the legacy and migration-only code because if we won’t, the app may not work properly and have serious performance issues. 

Another important factor is that your team has to be prepared for the migration, know and understand why you are migrating your product to React Native and what will be their role after this process. It is essential for them to understand the value that React Native brings to the table, especially the circle of technologies close to React Native. Such things as ease of implementing new cross-platform features on every platform at once and wide range of Open Source libraries that provide great support for developers in their work. 

If you are curious about migration to React Native, greenfield and brownfield software development, check out this episode of The React Native Show podcast fully dedicated to migration from different technologies to React Native:

Summary

As described above, migrating native and React apps to React Native is a very challenging, complex task that requires wide knowledge and rich experience not only in React Native, but also in native and, in some cases, web development. Luckily, the Callstack developers team is the one that has it all. 

As a community-trusted team of React Native experts, experienced in man difficult and demanding projects including migrations from React web and native platform to React Native, and creators and maintainers many Open Source libraries useful in migration process like Paper or React Native Brownfield, we are always eager to help at every stage of your migration process. 

If you have a feeling that you may need help, just talk to us! In the mean time, take a look at services offered by our React Native development company.

Author:
Michał Pierzchała
Head of Technology overseeing Callstack's Open Source and R&D efforts. Making sure we keep on innovating in app development space. Passionate about building OSS tools for JS devs. Created React Native Testing Library. And he likes rockets!
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Author:
Krzysztof Wróblewski
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The super app landscape

What are super apps?

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Super apps are multipurpose platforms that integrate a wide range of services and features to answer diverse user needs, all within a single mobile interface. Comprised of modular mini apps that users can activate at their convenience, super apps are the software equivalent of Swiss army knives that deliver a powerful mobile-first experience.

Super apps act as a one-stop shop for customers, allowing them to perform everyday tasks like shopping, paying bills, communicating, and more, all in one place. They’re a powerful tool for businesses looking to captivate users with what Mike Lazaridis, Blackberry founder who coined the term in 2010, defined as a “seamless, integrated, contextualized and efficient experience.”

A good example of such an all-round experience is WeChat, a multipurpose app developed in China. Its core features include messaging, localization, a search engine, a news feed, payments, loans, public services, transportation, and housing – and that’s by no means a finished list. It shouldn’t be surprising that the number of active users on WeChat is estimated to reach 1.102 billion by 2025.

What do super apps offer?

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Super apps are made to meet the modern-day demand for smooth, convenient, all-encompassing mobile experiences. What makes them stand out, however, is the way they’re built and how they work. 

Ordinary mobile products offer a variety of features within a single application. Super apps, on the other hand, operate as a platform to deliver modular mini apps that users can activate for personalized experiences. The things that account for the super quality in super apps include:

  • range of services – while a mobile application typically serves a single purpose, a super app aims to be the only piece of software a user needs to perform a variety of actions across services or even industries, like Grab, WeChat, or Gojek.
  • all-in-one toolkit – traditional suites of applications released by tech giants like Google or Microsoft require users to switch between products to access different services. Super apps, on the other hand, shorten the customer journey by allowing users to achieve different goals within a single ecosystem without downloading multiple digital products.
  • data sharing – as opposed to ordinary apps that collect data related to a specific purpose only, super apps gather and process much more user data. While this may raise privacy and security concerns, properly-handled data sharing between respective services is a safe way to ensure an even smoother user experience.
  • financial services – there are limitless combinations of services that super apps may offer, from messaging, social networking, and e-commerce to transportation and health. However, as the examples of Gojek’s GoPay or WeChat Pay within WeChat Wallet show, built-in payment is one of the most prevalent. Super app users are usually required to provide their payment information only once for cross-service transactions – and they don’t need to leave the app to finalize the payment.

What’s the global landscape of super apps?

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Ever since the launch of WeChat in 2011, super apps have been on the rise. There has been a notable difference between the emerging and developed economies’ approach to this kind of digital products, though. 

Super apps have taken emerging markets by storm. Among the most notable all-in-one applications released in the last decade are Southeast Asia's leading platforms Grab and MoMo, Latin America-based Rappi, Middle East’s first super app Careem, and WhatsApp, which started turning into a super app in Brazil by launched in-app business directory and shopping features. There are a few reasons why super apps have been booming in developing countries:

  • mobile-first nations – the emerging economies didn’t experience the desktop revolution the same way the developer markets did. Only once smartphones hit the market did they get to easily access the internet, which made many Asian nations mobile-first consumers and contributed to the wide adoption of super apps.
  • unbanked population – a large percentage of unbanked populations was the issue that the emerging economies have struggled with for a long time. To give you an idea, in 2018, over 220 million adults in China, 190 million in India, and 99 million in Pakistan didn’t have a bank account. With financial services often lying at their core, super apps allow users to access their assets and make purchases through mobile devices.
  • regulators’ support – governments in emerging economies have been supporting super apps to drive technological advancement together. For example, WeChat’s been subsidized by the Chinese government since its creation in 2011, while Jakarta entered into a partnership with Grab, Gojek, and other local startups to accelerate the launch of the capital’s smart city project. 

While super apps have been proliferating across emerging markets, they’ve been struggling to gain traction in the West. Among the reasons why are:

  • consumers’ concerns with data security and privacy,
  • rigid data sharing and antitrust laws,
  • cut-throat competition between existing players in most verticals.

What does the super app market look like now, and how will it evolve?

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As of early 2023, 68% of the world’s population uses a mobile phone. Over the past year, the community of mobile users grew by 168 million individuals, and over 92% of all consumers use a mobile device to access the internet. These trends make the future look bright for businesses behind all sorts of mobile applications, including super apps, and translate into some promising numbers:

  • In 2022, the global super apps market size was valued at 61.30 billion U.S. dollars and was expected to expand at a compound annual growth rate of 27.8% until 2030. 
  • Gartner predicts that by 2027, over half of the population will be using multiple super apps daily, and their adoption will take place on both personal and enterprise levels. 
  • The survey conducted by statistics bureaus of the US, UK, Germany, and Australia estimated the number of potential day-one users for super apps is estimated to reach 98 million, which would result in an estimated 3.25 trillion U.S. dollars in annual spending on a super app by early-adoption users.

Super apps are widely adopted in Asia, the Middle East, Latin America, and Africa, but developed economies aren’t exempt from this global tech trend. The key to success in the US and Europe is to understand the distinctive needs and qualities of the Western markets. Having that in mind, Deloitte proposed the following direction for super apps in developed countries:

  • Having an established brand with developed user trust will make the organization’s entry into the super app ecosystem smoother, which seems promising for medium businesses and enterprises.
  • While banking and insurance-related features are indispensable in super apps, social media, ride-share, and payment companies are more likely to succeed in the Western market.
  • Unlike in the emerging economies, in the West, it seems unlikely to have one dominant super app; instead, we’re more likely to witness the rise of vertical-specific super apps, which means more opportunities for business growth.
  • Western super apps won’t aim to oust traditional mobile apps, and their competitive advantage is more likely to rely on giving users the ability to “manage fewer accounts, transact faster through consistent payments, save money using loyalty and rewards, and experience a better product enabled by cross-service insights and advice.”
  • Bearing in mind data privacy concerns, super apps targeted at the developed economies’ consumers will likely be more transparent about data use, and their functioning may require closer collaboration with regulators on the business's side.
  • The US and Europe won’t focus on the B2C market alone; we’re likely to witness there the emergence of more B2B super apps that will drive value “through data-driven insights, automated advice, and seamless integration of businesses’ platforms into a single workspace.”
Business impact of super apps

What are the business benefits of super apps?

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Super apps have dominated emerging markets, and it’s only a matter of time before their popularity grows in the West. If you’re still wondering if your organization should jump on the super app bandwagon, consider the following business benefits:

  • increased customer acquisition – compared to traditional mobile applications, super apps offer a much wider range of services that cater to the needs of diverse audiences, which translates into a bigger potential user base. As your super app grows, it’s also possible to convert the existing users into consumers of a new service at practically zero cost, much like Gojek did.
  • improved user engagement – providing consolidated services in one place and consistently expanding the offering with new features gives you more touchpoints for interaction with users and makes it easier to keep them engaged. In the words of Dara Khosrowshahi, Uber’s CEO, “when we see customers using more than one product, their engagement with the platform more than doubles.” All of that boils down to bigger profits.
  • business stability and sustainable growth – this benefit relates to the ones we’ve already discussed, but it’s worth paying special attention to it due to the current economic landscape. Super apps embrace vertical growth by encouraging a shift from a product to a platform mindset. Offering a range of services may help your business survive when a given vertical suffers from an unexpected breakdown, as was the case with travel during the pandemic. 
  • increased revenue – services within the super app ecosystem can be provided by either you as the app owner or the third-party partners. Opening up your space to various retailers lets you monetize your product easily.
  • faster bug fixing – you can release fixes and improvements Over The Air (OTA), which means no hassle with Google Play or App Store review processes. Thanks to super app configuration, mini apps can download and install updates instantly without rebuilding the whole app.
  • team independence and development efficiency – while developing super apps in separate repositories, the host of the super app provides the necessary tools and infrastructure. The teams can work independently, which results in faster development, fewer code conflicts, and increased ownership in product teams.
  • security despite users’ concerns with data privacy, a super app is a sandbox where developers can play without breaking anything. You can build an environment where you mock some sensitive parts of your codebase. As a result, the environment is more secure, and external providers can move faster and contribute features to your app.

What makes super apps popular with users?

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Super apps collectively have over 2.4 billion active users all over the world. Their enormous popularity in the B2C market can be attributed to:

  • ability to coordinate different aspects of everyday life in one place,
  • convenience and engaging experience without the need to learn how to use multiple apps,
  • time and storage saving resulting from having one user profile and downloading a single app for all services,
  • minimized risk of losing sensitive information when switching between service providers.

These benefits speak to those who haven’t yet had a chance to use a super app. According to a report by PYMNTS and PayPal, seven in ten global consumers express interest in a solution allowing them to manage payments and other everyday activities through a centralized tool. There’s much untapped potential in the developed economies, so why not be among the first to unlock it?

What are the concerns and challenges that come with super apps?

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While super apps offer numerous benefits to both businesses and consumers, they come with some serious challenges as well:

  • data privacy – the multitude of services available within super apps is actually a mixed blessing for many users, especially in the West. Having heard hundreds of stories about data privacy abuse and data breaches from big tech companies, consumers are hesitant to share all their personal data with a single service provider, even if it comes with invaluable benefits.
  • regulatory issues – as a result of data privacy infringements, regulators around the world are implementing laws to further protect personal data and restrict sharing of user data between service providers. Another challenge for businesses behind super apps may be the competition legislations adopted in developed economies.  
  • user experience – in terms of UX, the main challenge for the teams behind the mini apps that make the super app is to strike a balance between consistency and uniqueness. On the one hand, the consistent look and feel account for a positive user experience, drive adoption and retention, and foster a sense of safety. On the other, super apps by definition are made to cater to the diverse needs of heterogeneous audiences, all at once. As each demographic segment interacts with digital products differently, the question remains how to maximize usability without overcomplicating the user experience.
Super apps and your organization

What does moving into the super app ecosystem mean for your organization?

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Digital products are not developed in a vacuum. The way they’re designed and operate depends on many factors, one of which is communication between the development team. 

As stated by Melvin E. Conway: "Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure." In simple words, Conway’s law means that the organizational structure is often mirrored in software design. For example, large corporations still using legacy technologies are much more likely to build stiff monoliths – and so their product reflects the organizational concerns more than the actual user needs.

A tool to tackle this issue is the reverse Conway maneuver, according to which the desired software architecture is what affects the organizational structure, not the other way round. This way, teams are capable of building digital products optimized for changing user requirements and business objectives, just as is the case with super app development.

The super app approach has a profound impact on how you organize the work of your developers. It enables respective teams to independently develop and deploy parts of the host application as mini apps and gives more room for third-party contributions. The way the super app architecture influences team composition and the development process is a great example of the reverse Conway law in practice.

What should you consider when choosing a super app development partner?

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Hiring a tech partner to build your super app can be a real money and time-saver. It takes the burden of internal recruitment from you if you lack in-house expertise in this area and opens up possibilities for upskilling. When looking for a reliable super app development company, we advise looking for the following qualities:

  • experience building super apps – it may sound obvious, but checking if the tech partner’s portfolio includes projects like yours is key. Super apps are a special kind of mobile applications, so the software development company of your choice should know its way around building mini apps and integrating them into whole ecosystems. If you’re wondering about our experience, check out how we improved the performance of MoMo’s super app and mini apps by migrating their architecture to Re.Pack
  • consultancy approach – what sets a good tech partner apart from ordinary outsourced teams is proactivity in matching tech solutions with your needs. You should be looking for a company that’s eager to take a closer look at your current product and situation first, without assessing it as good or bad, but focusing on the potential for improvement. Only once the tech partner understands your pain points and objectives better can they suggest a bespoke mix of technology and solutions. 
  • going beyond development – stepping into the super app ecosystem is not a purely technical choice; it also entails a certain degree of organizational change. That’s why the right tech partner should be able to outline the product roadmap and propose relevant changes to processes, workflows, and peopleware.
  • knowledge-sharing – if your in-house team doesn’t have much experience building super app ecosystems, it might be a good idea to look for a tech partner whose developers will share their specialist knowledge with your squad. This will make the long-term development work more efficient and lay the foundations for sustainable business growth.

At Callstack, we’ve got super app development skills and a business-oriented proactive approach. Get in touch with us, and let’s find out how we can help your business succeed with the next big super app.

Super app development in practice

What are key tech considerations for super app development?

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The unique experience that super apps offer comes with some special development considerations. Here’s a brief overview of the main factors, which you can read more about in the tech FAQ:

  • tech stack – there’s no one-size-fits-all solution to building a robust and sustainable super app, so you can go for native or cross-platform development, depending on your needs and capabilities. Our experience shows that choosing React Native and Re.Pack means optimal user experience and the ability to leverage code splitting for streamlined development and simplified management of your super app.
  • consistent performance – whether you’re in charge of all services or you’re cooperating with a third-party partner, all functionalities within your super app should have equal operating speed and effectiveness, even on low-end devices and in the low-speed internet environment.
  • user-friendly design – the abundance of features can be overwhelming unless you minimize the friction with a consistent design. To captivate the users, your super app’s design should be visually appealing yet clean and intuitive, especially if you’re planning to win the hearts of Western users, who are accustomed to straightforward navigation and minimalist design.
  • security ensuring user safety should be a priority for every tech business; however, with super apps storing all personal information in one place, their creators should put in even more effort to prevent security breaches. The precautions your development team can take include pen tests, 2FA, code obfuscation, data encryption, and more.

What approach to super app development can you adopt? 

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Digital products come in all shapes and sizes, which is why the common answer to many questions in software development is “it depends”. Super app development is no different, as depending on your preferences, you can choose from the following approaches:

  • Native Android application with Feature Delivery
  • Native iOS application with WebViews
  • Cross-platform React Native application with Metro
  • Cross-platform React Native application with Webpack and Re.Pack

At Callstack, though, we recommend going for the latter because it proves to be the most beneficial. Compared to other tools and solutions available on the market, Re.Pack allows you to enjoy:

  • reusable features
  • smaller JS bundle size
  • OTA updates of on-demand features
  • time and cost-effective development experience
  • ability to leverage third-party contributions

If you’re wondering how it works in practice, we encourage you to check out our super-app-showcase.

What exactly is Callstack’s super-app-template?

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Our super-app-showcase is a repository demonstrating how to structure a super app when working with Re.Pack and Module Federation to achieve the best business results. It highlights various solutions and best practices developers can employ to tackle challenges and streamline the super app development process. 

The super-app-showcase comprises:

  • the host app, which is the main container for the micro-frontends,
  • the shell app, which functions like a blueprint of the host app with shared dependencies,
  • a few mini apps, each dedicated to a single service booking, shopping, dashboard, and news – the latter being stored in a separate repository. 

You can learn more about the architecture and the intricacies of the template from the case study published on our blog.

How does super app development with Callstack's super-app-template influence your team’s work and developer experience?

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By definition, a super app is built as a platform “to deliver a mini apps ecosystem that users can choose from to activate for consistent and personalized app experiences.” This modular approach allows a large development team to split into smaller squads, each focused on a respective mini app, and enables third-party contributions to be seamlessly integrated into the final product. 

When implemented right, such a workflow may lead to greater flexibility, independence, and development speed. Among the steps to optimize developer experience in the super app setup, there are:

  • creating and exposing a sandbox environment that closely resembles your host app, like the shell app in our super-app-showcase,
  • if need be, creating an SDK that contains common and repeatedly used elements,
  • organizing the codebase into a monorepo, which is an optional step.

Using Re.Pack and our super-app-template to build your super app makes the application of these tips in developers’ work much easier.

The super app landscape
Business impact of super apps
Super apps and your organization
Super app development in practice

What are super apps?

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Super apps are multipurpose platforms that integrate a wide range of services and features to answer diverse user needs, all within a single mobile interface. Comprised of modular mini apps that users can activate at their convenience, super apps are the software equivalent of Swiss army knives that deliver a powerful mobile-first experience.

Super apps act as a one-stop shop for customers, allowing them to perform everyday tasks like shopping, paying bills, communicating, and more, all in one place. They’re a powerful tool for businesses looking to captivate users with what Mike Lazaridis, Blackberry founder who coined the term in 2010, defined as a “seamless, integrated, contextualized and efficient experience.”

A good example of such an all-round experience is WeChat, a multipurpose app developed in China. Its core features include messaging, localization, a search engine, a news feed, payments, loans, public services, transportation, and housing – and that’s by no means a finished list. It shouldn’t be surprising that the number of active users on WeChat is estimated to reach 1.102 billion by 2025.

What do super apps offer?

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Super apps are made to meet the modern-day demand for smooth, convenient, all-encompassing mobile experiences. What makes them stand out, however, is the way they’re built and how they work. 

Ordinary mobile products offer a variety of features within a single application. Super apps, on the other hand, operate as a platform to deliver modular mini apps that users can activate for personalized experiences. The things that account for the super quality in super apps include:

  • range of services – while a mobile application typically serves a single purpose, a super app aims to be the only piece of software a user needs to perform a variety of actions across services or even industries, like Grab, WeChat, or Gojek.
  • all-in-one toolkit – traditional suites of applications released by tech giants like Google or Microsoft require users to switch between products to access different services. Super apps, on the other hand, shorten the customer journey by allowing users to achieve different goals within a single ecosystem without downloading multiple digital products.
  • data sharing – as opposed to ordinary apps that collect data related to a specific purpose only, super apps gather and process much more user data. While this may raise privacy and security concerns, properly-handled data sharing between respective services is a safe way to ensure an even smoother user experience.
  • financial services – there are limitless combinations of services that super apps may offer, from messaging, social networking, and e-commerce to transportation and health. However, as the examples of Gojek’s GoPay or WeChat Pay within WeChat Wallet show, built-in payment is one of the most prevalent. Super app users are usually required to provide their payment information only once for cross-service transactions – and they don’t need to leave the app to finalize the payment.

What’s the global landscape of super apps?

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Ever since the launch of WeChat in 2011, super apps have been on the rise. There has been a notable difference between the emerging and developed economies’ approach to this kind of digital products, though. 

Super apps have taken emerging markets by storm. Among the most notable all-in-one applications released in the last decade are Southeast Asia's leading platforms Grab and MoMo, Latin America-based Rappi, Middle East’s first super app Careem, and WhatsApp, which started turning into a super app in Brazil by launched in-app business directory and shopping features. There are a few reasons why super apps’ have been booming in developing countries:

  • mobile-first nations – the emerging economies didn’t experience the desktop revolution the same way the developer markets did. Only once smartphones hit the market did they get to easily access the internet, which made many Asian nations mobile-first consumers and contributed to the wide adoption of super apps.
  • unbanked population – a large percentage of unbanked populations was the issue that the emerging economies have struggled with for a long time. To give you an idea, in 2018, over 220 million adults in China, 190 million in India, and 99 million in Pakistan didn’t have a bank account. With financial services often lying at their core, super apps allow users to access their assets and make purchases through mobile devices.
  • regulators’ support – governments in emerging economies have been supporting super apps to drive technological advancement together. For example, WeChat’s been subsidized by the Chinese government since its creation in 2011, while Jakarta entered into a partnership with Grab, Gojek, and other local startups to accelerate the launch of the capital’s smart city project. 

While super apps have been proliferating across emerging markets, they’ve been struggling to gain traction in the West. Among the reasons why are:

  • consumers’ concerns with data security and privacy
  • rigid data sharing and antitrust laws
  • cut-throat competition between existing players in most verticals.

What does the super app market look like now, and how will it evolve?

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As of early 2023, 68% of the world’s population uses a mobile phone. Over the past year, the community of mobile users grew by 168 million individuals, and over 92% of all consumers use a mobile device to access the internet. These trends make the future look bright for businesses behind all sorts of mobile applications, including super apps, and translate into some promising numbers:

  • In 2022, the global super apps market size was valued at 61.30 billion U.S. dollars and was expected to expand at a compound annual growth rate of 27.8% until 2030. 
  • Gartner predicts that by 2027, over half of the population will be using multiple super apps daily, and their adoption will take place on both personal and enterprise levels. 
  • The survey conducted by statistics bureaus of the US, UK, Germany, and Australia estimated the number of potential day-one users for super apps is estimated to reach 98 million, which would result in an estimated 3.25 trillion U.S. dollars in annual spending on a super app by early-adoption users.

Super apps are widely adopted in Asia, the Middle East, Latin America, and Africa, but developed economies aren’t exempt from this global tech trend. The key to success in the US and Europe is to understand the distinctive needs and qualities of the Western markets. Having that in mind, Deloitte proposed the following direction for super apps in developed countries:

  • Having an established brand with developed user trust will make the organization’s entry into the super app ecosystem smoother, which seems promising for medium businesses and enterprises.
  • While banking and insurance-related features are indispensable in super apps, social media, ride-share, and payment companies are more likely to succeed in the Western market.
  • Unlike in the emerging economies, in the West, it seems unlikely to have one dominant super app; instead, we’re more likely to witness the rise of vertical-specific super apps, which means more opportunities for business growth.
  • Western super apps won’t aim to oust traditional mobile apps, and their competitive advantage is more likely to rely on giving users the ability to “manage fewer accounts, transact faster through consistent payments, save money using loyalty and rewards, and experience a better product enabled by cross-service insights and advice.”
  • Bearing in mind data privacy concerns, super apps targeted at the developed economies’ consumers will likely be more transparent about data use, and their functioning may require closer collaboration with regulators on the business's side.
  • The US and Europe won’t focus on the B2C market alone; we’re likely to witness there the emergence of more B2B super apps that will drive value “through data-driven insights, automated advice, and seamless integration of businesses’ platforms into a single workspace.”

What are the business benefits of super apps?

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Super apps have dominated emerging markets, and it’s only a matter of time before their popularity grows in the West. If you’re still wondering if your organization should jump on the super app bandwagon, consider the following business benefits:

  • increased customer acquisition – compared to traditional mobile applications, super apps offer a much wider range of services that cater to the needs of diverse audiences, which translates into a bigger potential user base. As your super app grows, it’s also possible to convert the existing users into consumers of a new service at practically zero cost, much like Gojek did.
  • improved user engagement – providing consolidated services in one place and consistently expanding the offering with new features gives you more touchpoints for interaction with users and makes it easier to keep them engaged. In the words of Dara Khosrowshahi, Uber’s CEO, “when we see customers using more than one product, their engagement with the platform more than doubles.” All of that boils down to bigger profits.
  • business stability and sustainable growth – this benefit relates to the ones we’ve already discussed, but it’s worth paying special attention to it due to the current economic landscape. Super apps embrace vertical growth by encouraging a shift from a product to a platform mindset. Offering a range of services may help your business survive when a given vertical suffers from an unexpected breakdown, as was the case with travel during the pandemic. 
  • increased revenue – services within the super app ecosystem can be provided by either you as the app owner or the third-party partners. Opening up your space to various retailers lets you monetize your product easily.
  • faster bug fixing – you can release fixes and improvements Over The Air (OTA), which means no hassle with Google Play or App Store review processes. Thanks to super app configuration, mini apps can download and install updates instantly without rebuilding the whole app.
  • team independence and development efficiency – while developing super apps in separate repositories, the host of the super app provides the necessary tools and infrastructure. The teams can work independently, which results in faster development, fewer code conflicts, and increased ownership in product teams.
  • security despite users’ concerns with data privacy, a super app is a sandbox where developers can play without breaking anything. You can build an environment where you mock some sensitive parts of your codebase. As a result, the environment is more secure, and external providers can move faster and contribute features to your app.

What makes super apps popular with users?

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Super apps collectively have over 2.4 billion active users all over the world. Their enormous popularity in the B2C market can be attributed to:

  • ability to coordinate different aspects of everyday life in one place,
  • convenience and engaging experience without the need to learn how to use multiple apps,
  • time and storage saving resulting from having one user profile and downloading a single app for all services,
  • minimized risk of losing sensitive information when switching between service providers.

These benefits speak to those who haven’t yet had a chance to use a super app. According to a report by PYMNTS and PayPal, seven in ten global consumers express interest in a solution allowing them to manage payments and other everyday activities through a centralized tool. There’s much untapped potential in the developed economies, so why not be among the first to unlock it?

What are the concerns and challenges that come with super apps?

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While super apps offer numerous benefits to both businesses and consumers, they come with some serious challenges as well:

  • data privacy – the multitude of services available within super apps is actually a mixed blessing for many users, especially in the West. Having heard hundreds of stories about data privacy abuse and data breaches from big tech companies, consumers are hesitant to share all their personal data with a single service provider, even if it comes with invaluable benefits.
  • regulatory issues – as a result of data privacy infringements, regulators around the world are implementing laws to further protect personal data and restrict sharing of user data between service providers. Another challenge for businesses behind super apps may be the competition legislations adopted in developed economies.  
  • user experience – in terms of UX, the main challenge for the teams behind the mini apps that make the super app is to strike a balance between consistency and uniqueness. On the one hand, the consistent look and feel account for a positive user experience, drive adoption and retention, and foster a sense of safety. On the other, super apps by definition are made to cater to the diverse needs of heterogeneous audiences, all at once. As each demographic segment interacts with digital products differently, the question remains how to maximize usability without overcomplicating the user experience.

What does moving into the super app ecosystem mean for your organization?

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Digital products are not developed in a vacuum. The way they’re designed and operate depends on many factors, one of which is communication between the development team. 

As stated by Melvin E. Conway: "Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure." In simple words, Conway’s law means that the organizational structure is often mirrored in software design. For example, large corporations still using legacy technologies are much more likely to build stiff monoliths – and so their product reflects the organizational concerns more than the actual user needs.

A tool to tackle this issue is the reverse Conway maneuver, according to which the desired software architecture is what affects the organizational structure, not the other way round. This way, teams are capable of building digital products optimized for changing user requirements and business objectives, just as is the case with super app development.

The super app approach has a profound impact on how you organize the work of your developers. It enables respective teams to independently develop and deploy parts of the host application as mini apps and gives more room for third-party contributions. The way the super app architecture influences team composition and the development process is a great example of the reverse Conway law in practice.

What should you consider when choosing a super app development partner?

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Hiring a tech partner to build your super app can be a real money and time-saver. It takes the burden of internal recruitment from you if you lack in-house expertise in this area and opens up possibilities for upskilling. When looking for a reliable super app development company, we advise looking for the following qualities:

  • experience building super apps – it may sound obvious, but checking if the tech partner’s portfolio includes projects like yours is key. Super apps are a special kind of mobile applications, so the software development company of your choice should know its way around building mini apps and integrating them into whole ecosystems. If you’re wondering about our experience, check out how we improved the performance of MoMo’s super app and mini apps by migrating their architecture to Re.Pack
  • consultancy approach – what sets a good tech partner apart from ordinary outsourced teams is proactivity in matching tech solutions with your needs. You should be looking for a company that’s eager to take a closer look at your current product and situation first, without assessing it as good or bad, but focusing on the potential for improvement. Only once the tech partner understands your pain points and objectives better can they suggest a bespoke mix of technology and solutions. 
  • going beyond development – stepping into the super app ecosystem is not a purely technical choice; it also entails a certain degree of organizational change. That’s why the right tech partner should be able to outline the product roadmap and propose relevant changes to processes, workflows, and peopleware.
  • knowledge-sharing – if your in-house team doesn’t have much experience building super app ecosystems, it might be a good idea to look for a tech partner whose developers will share their specialist knowledge with your squad. This will make the long-term development work more efficient and lay the foundations for sustainable business growth.

At Callstack, we’ve got super app development skills and a business-oriented proactive approach. Get in touch with us, and let’s find out how we can help your business succeed with the next big super app.

What are key tech considerations for super app development?

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The unique experience that super apps offer comes with some special development considerations. Here’s a brief overview of the main factors, which you can read more about in the tech FAQ:

  • tech stack – there’s no one-size-fits-all solution to building a robust and sustainable super app, so you can go for native or cross-platform development, depending on your needs and capabilities. Our experience shows that choosing React Native and Re.Pack means optimal user experience and the ability to leverage code splitting for streamlined development and simplified management of your super app.
  • consistent performance – whether you’re in charge of all services or you’re cooperating with a third-party partner, all functionalities within your super app should have equal operating speed and effectiveness, even on low-end devices and in the low-speed internet environment.
  • user-friendly design – the abundance of features can be overwhelming unless you minimize the friction with a consistent design. To captivate the users, your super app’s design should be visually appealing yet clean and intuitive, especially if you’re planning to win the hearts of Western users, who are accustomed to straightforward navigation and minimalist design.
  • security ensuring user safety should be a priority for every tech business; however, with super apps storing all personal information in one place, their creators should put in even more effort to prevent security breaches. The precautions your development team can take include pen tests, 2FA, code obfuscation, data encryption, and more.

What approach to super app development can you adopt? 

arrow-down

Digital products come in all shapes and sizes, which is why the common answer to many questions in software development is “it depends”. Super app development is no different, as depending on your preferences, you can choose from the following approaches:

  • Native Android application with Feature Delivery
  • Native iOS application with WebViews
  • Cross-platform React Native application with Metro
  • Cross-platform React Native application with Webpack and Re.Pack

At Callstack, though, we recommend going for the latter because it proves to be the most beneficial. Compared to other tools and solutions available on the market, Re.Pack allows you to enjoy:

  • reusable features
  • smaller JS bundle size
  • OTA updates of on-demand features
  • time and cost-effective development experience
  • ability to leverage third-party contributions

If you’re wondering how it works in practice, we encourage you to check out our super-app-template.

What exactly is Callstack’s super-app-template?

arrow-down

Our super-app-template is a repository demonstrating how to structure a super app when working with Re.Pack and Module Federation to achieve the best business results. It highlights various solutions and best practices developers can employ to tackle challenges and streamline the super app development process. 

The super-app-template comprises:

  • the host app, which is the main container for the micro-frontends
  • the shell app, which functions like a blueprint of the host app with shared dependencies
  • a few mini apps, each dedicated to a single service booking, shopping, dashboard, and news – the latter being stored in a separate repository. 

You can learn more about the architecture and the intricacies of the template from the case study published on our blog.

What does the super app How does super app development with Callstack template influence your team’s work and developer experience? look like now, and how will it evolve?

arrow-down

By definition, a super app is built as a platform “to deliver a mini apps ecosystem that users can choose from to activate for consistent and personalized app experiences.” This modular approach allows a large development team to split into smaller squads, each focused on a respective mini app, and enables third-party contributions to be seamlessly integrated into the final product. 

When implemented right, such a workflow may lead to greater flexibility, independence, and development speed. Among the steps to optimize developer experience in the super app setup, there are:

  • creating and exposing a sandbox environment that closely resembles your host app, like the shell app in our super-app-template,
  • if need be, creating an SDK that contains common and repeatedly used elements,
  • organizing the codebase into a monorepo, which is an optional step.

Using Re.Pack and our super-app-template to build your super app makes the application of these tips in developers’ work much easier.

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