When building a cross-platform mobile app — one that runs on both Android and iOS — the two most widely used frameworks are React Native and Flutter. Both allow a single codebase to power apps on multiple platforms, but they differ in language, architecture, and use case fit.
This guide explains both clearly so you can have an informed conversation with your development team about which makes more sense for your project.
What Is React Native?
React Native is a framework developed by Meta (Facebook) that uses JavaScript and React to build mobile apps. It has been in production since 2015 and is used by companies including Meta, Microsoft, Shopify, and Coinbase.
React Native renders native UI components — meaning the app uses the actual Android and iOS UI elements rather than custom-drawn ones. This gives apps a natural feel that matches each platform's design language.
What Is Flutter?
Flutter is a framework developed by Google that uses the Dart programming language. It draws its own UI components using a rendering engine called Skia, rather than using platform components. This means the same UI appears identically on Android, iOS, and other platforms.
Flutter is newer than React Native (released in 2018) but has grown rapidly. It is used by Google, BMW, eBay, and many others.
Key Differences
Language
- React Native: JavaScript / TypeScript — familiar to web developers
- Flutter: Dart — a language specific to Flutter with a learning curve
UI Rendering
- React Native: Uses native platform UI components — app looks and feels native to each platform
- Flutter: Draws its own UI — pixel-perfect consistency across all platforms
Performance
Both frameworks deliver good performance for most business applications. Flutter has an advantage for apps with heavy custom animation or graphics. React Native is sufficient for standard business and consumer apps.
Ecosystem and Libraries
React Native has a larger ecosystem due to its JavaScript foundation — most JavaScript libraries can be used. Flutter's ecosystem is growing rapidly but is newer.
Developer Availability
React Native developers are generally easier to find because JavaScript is the most common programming language. Dart developers are fewer, which can affect hiring and long-term maintenance.
When to Choose React Native
- Your team already works with JavaScript or React
- You are building a standard business or consumer app
- You want access to the widest range of third-party integrations
- The app needs to look and behave natively on each platform
When to Choose Flutter
- You need pixel-perfect UI consistency across platforms
- The app has heavy custom animations or a unique visual design
- You are also targeting desktop or web alongside mobile
- Your development team has Dart experience
What We Use at Shriyan Technologies
We develop with React Native for most cross-platform mobile projects due to the strong ecosystem, developer familiarity, and native UI behavior. We recommend Flutter when the specific project requirements suit it better.
The right choice always depends on your specific app, your team, and your long-term maintenance plan — not a generic recommendation.