React Native · Mobile UI at native speed
How does React Native compare with Flutter?
Short answer
React Native renders to platform views and reuses React and JavaScript, while Flutter draws every pixel with its own engine and uses Dart. The trade-off is ecosystem familiarity versus rendering consistency and control.
Both frameworks let one codebase target iOS and Android, but they take different routes. React Native delegates rendering to native platform views. Flutter ships its own rendering engine and paints its own widgets, which gives highly consistent visuals across platforms.
- Language: React Native uses JavaScript or TypeScript; Flutter uses Dart
- Rendering: React Native uses native views; Flutter uses Skia or Impeller
- Ecosystem: React Native benefits from the React and npm ecosystem; Flutter has a curated widget and package ecosystem
- Platform feel: native views can feel more platform-native; Flutter widgets look the same everywhere unless you theme them
- Native interop: both support platform channels or native modules, but the mechanics differ
React Native: <View><Text>Hello</Text></View>
-> native UIView / android.view.View plus a native text view
Flutter: Text("Hello")
-> Flutter widget painted by the engine onto a canvasHow I would decide
If the team already knows React and TypeScript, or the app depends heavily on native SDKs and platform UI conventions, React Native is usually the lower-risk choice. If the design is highly custom and pixel-identical across platforms, or the team already uses Dart, Flutter can be attractive. Neither choice removes the need to understand platform behaviour.
Follow-ups you should expect
Interviewers use these to check whether the first answer was understanding or memorisation.
- 1Which one gives a more native feel?
- 2How do both frameworks handle platform-specific code?
- 3What are the hiring implications of each choice?
- 4When would you migrate from one to the other?
Say it in the interview
React Native renders to native platform views and lets a React team reuse its skills, while Flutter paints its own UI with its own engine in Dart. I would pick React Native when React familiarity and native SDK integration matter, and Flutter when I need pixel-identical custom UI and the team is comfortable with Dart. I avoid blanket performance claims because both can be fast or slow depending on the screen and how work is split across threads.
Use this as a model, not a script. Saying it in your own words is what makes it survive follow-up pressure.
Related questions
Reading is step one
Now say it out loud.
Understanding an answer and delivering it under pressure are different skills. Rehearse this topic in a live React Native mock interview and get scored feedback on depth, clarity and confidence.