Mobile Frameworks

3 open source tools compared. Sorted by stars — scroll down for our analysis.

Tool	Stars	Velocity	Language	License	Score
Flutter Google UI toolkit for mobile, web, and desktop	175.7k	—	Dart	BSD 3-Clause "New" or "Revised" License	82
React Native Build native apps using React	125.6k	—	C++	MIT License	82
Expo Platform for universal React apps	48.2k	—	TypeScript	MIT License	77

Our Analysis

Flutter175.7k★

Flutter is Google's bet on one codebase for everything — mobile, web, desktop, embedded. It renders its own pixels via Skia/Impeller instead of using platform native widgets, which means pixel-perfect consistency across platforms. The hot reload is addictive. React Native is the main mobile competitor using JavaScript and platform-native components. Kotlin Multiplatform shares business logic but still needs native UI. For web, Next.js/Remix are better. MAUI is Microsoft's cross-platform attempt. Use Flutter if you're building a mobile-first app and want beautiful, custom UI that looks identical on iOS and Android. The widget system is powerful, the community is huge, and Dart is easier than people think. The catch: Dart. Your team needs to learn a language they'll use nowhere else. Web and desktop support exist but feel second-class — web bundle sizes are large, desktop apps feel slightly off-native. And Flutter doesn't use native platform widgets, so your iOS app won't feel like an iOS app unless you explicitly design for it.

React Native125.6k★

Still the most practical way to ship a mobile app from a JavaScript codebase. React Native lets web developers build native iOS and Android apps using React, sharing 80-90% of code between platforms. If you're an indie hacker who needs a mobile app and your team knows React, the math is simple. Flutter is the main competitor — Dart-based, Google-backed, arguably better performance and consistency. Expo is the React Native framework that handles the painful parts (builds, updates, native modules). Capacitor wraps web apps in a native shell. Swift/Kotlin are the native options. At 125K+ stars and Meta's backing, the ecosystem is massive: navigation, state management, UI libraries — everything has a React Native solution. The new architecture (Fabric, TurboModules) has finally shipped, fixing the performance complaints that plagued older versions. The catch: you will still need Xcode and Android Studio. Native module compatibility breaks between versions. The upgrade path between major versions remains painful. And "learn once, write anywhere" is aspirational — platform-specific code is inevitable for anything beyond basic screens. If you don't already know React, Flutter's developer experience is arguably smoother.

Expo48.2k★

Expo isn't an alternative to React Native anymore — it IS how you build React Native apps in 2026. The managed workflow, EAS Build, Expo Router, and the module ecosystem have made bare React Native CLI feel like driving stick when automatic exists. If you're an indie hacker building a mobile app and you already know React, start here. Period. Flutter is the real competitor — better UI consistency across platforms, Dart is pleasant, and the widget system is gorgeous. But if your team thinks in JavaScript, Flutter means learning a new language. Capacitor/Ionic exist for web-first hybrid apps, but native feel suffers. Expo saves 15-20% dev time on typical projects. OTA updates mean you push JS changes without App Store review. The dev experience is genuinely excellent — scan a QR code, see your app. The catch: the moment you need a custom native module that Expo doesn't support, you're ejecting into the bare workflow, and that transition isn't always smooth. Also, EAS Build's free tier is limited — real CI/CD for mobile will cost you.