From React to Flutter: A Journey into Cross-Platform App Development

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Written By Interwork Software

Consider using a cross-platform framework to build mobile apps and leverage your existing web skills. Flutter uses the Dart programming language, which is easy to pick up if you know JavaScript. Flutter transforms the way you think about building mobile apps. In this article, we’ll explore how to get started with Flutter as a web developer, the key concepts to understand, how layouts and UI components work, state management options, and how to compile your Flutter app for release in the app stores. By the end, you’ll be ready to build your first Flutter app! 

Comparing React Native and Flutter for Cross-Platform Mobile Apps 

When building cross-platform mobile apps, two popular frameworks are React Native and Flutter. Both allow you to leverage existing web dev skills to build IOS and Android apps, but there are some key differences to consider: 

React Native renders native UI components on iOS and Android using the React framework. It has a large community of developers and a robust ecosystem of open-source libraries. However, the native UI components can be tricky to customize and styling is not always consistent across platforms App performance may also suffer. 

Flutter uses its UI rendering engine to paint widgets, so the UI is consistent across IOS and Android. This can provide a better user experience. Flutter also has hot reloaded, allowing you to quickly see changes in the emulator or simulator. The Flutter SDK is fairly large, though, which can increase app size. Flutter is also newer, so the ecosystem is still . 

When choosing a framework, think about: 

  • Your team’s experience. If more familiar with React, React Native may have a shallower learning curve. For web devs new to mobile, Flutter could be an easy start. 
  • App performance needs. If performance is critical, Flutter’s UI rendering may have an edge. For simpler apps, either framework will work well. 
  • Ecosystem requirements. If relying on many third-party libraries, React Native currently has more options. Flutter’s options are expanding quickly though. 
  • Styling needs. If pixel-perfect styling across platforms is important, Flutter’s unified UI may be better, but React Native requires more work to achieve styling consistency. 
  • App size constraints. Flutter’s larger SDK may be prohibitive if building a very lightweight app, For most average-sized apps, either framework can work. 

Why Switching from React Native to Flutter 

Some of the main benefits of Flutter include: 

  • Fast development: Flutter’s hot reload allows you to quickly see the impact of changes to your code. You can instantly view the effect of modifying UI elements, adding features, or fixing bugs. This significantly speeds up development time. 
  • Native performance: Flutter compiles native code, allowing apps to run at native speeds. The UI rendering and gestures feel very smooth and natural. 
  • Beautiful UI: Flutter includes a rich set of pre-built widgets that follow Material Design and Cupertino (IOS-style) guidelines. It’s simple to build an attractive UI. 
  • Code reuse: You can use the same Flutter codebase to target IOS and Android, as well as build web and desktop apps. This allows for a lot of code sharing across platforms. 
  • Growing popularity: Flutter is gaining popularity and being adopted by major companies like Google, Alibaba, and Tencent. The community and ecosystem around Flutter are growing rapidly. 


Flutter is an exciting cross-platform mobile app development framework that offers immense benefits to developers. With a single codebase, you can build for both iOS and Android, saving time and increasing productivity. The hot reload feature streamlines the development process, and the extensive widgets and UI components allow you to create beautiful UIs quickly. If you want to build mobile apps and maximize productivity while delivering great user experience, Flutter is the way to go. 

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