Flutter
Open SourceBuild apps for any screen.
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About
Flutter is Google's open-source UI toolkit for building natively compiled applications from a single Dart codebase — iOS, Android, web, Windows, macOS, and Linux. Unlike React Native (which maps JavaScript components to native UI widgets), Flutter renders every pixel itself using the Skia (and later Impeller) graphics engine, making the UI pixel-perfect and consistent across all platforms without depending on native component implementations.
The UI model is purely widget-based and reactive: everything is a widget (text, padding, gesture detectors, animated transitions), widgets are immutable descriptions of UI, and state changes rebuild the relevant widget subtrees. This model, combined with Flutter's hot reload (inject code changes into the running VM without losing state), makes UI iteration very fast. Dart compiles to native ARM machine code for mobile and to WebAssembly for web.
pub.dev hosts 30,000+ Flutter and Dart packages. Official plugins cover Firebase, in-app purchases, maps, camera, and platform channels for custom native code. Flutter has 165,000+ GitHub stars and is used in production by Google Pay, BMW, eBay, and ByteDance.
Key Features
- Single codebase for mobile, web, and desktop
- Native performance with 60fps animations
- Hot reload for instant development feedback
- Rich, customizable widget library
- Material and Cupertino design systems
- Strong typing with Dart language
- Excellent documentation and codelabs
- Growing ecosystem on pub.dev
Pros
- True single codebase across all platforms
- Excellent performance with native compilation
- Beautiful UI out of the box
- Fast development with hot reload
- Strong Google backing and active development
- Great for custom UIs and animations
- Good developer tooling
Cons
- Requires learning Dart language
- Smaller community than React Native
- App size larger than pure native apps
- Some native platform features require plugins
- Less mature web support than mobile
- Not using native platform UI components
- Limited access to some native APIs
Pricing
Open SourcePossible Stacks
Flutter + SQLite
ProjectFlutter mobile app with SQLite for local data storage — build an offline-first app that saves data on the device.
Flutter + Firebase
ProjectFlutter mobile app backed by Firebase — authentication, real-time database, cloud storage, and push notifications out of the box.
Supabase + Flutter
ProjectCross-platform Flutter mobile app backed by Supabase — PostgreSQL database, authentication, and real-time sync out of the box.
Related Tools
Works well with (3)
Integrates with (1)
Learning Resources
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