A framework for building native iOS and Android apps using React, sharing code and concepts with web.
Product teams get to ship on both platforms with one engineering team; the business avoids the cost of building and maintaining fully separate native codebases before knowing whether that investment is justified.
Building and maintaining fully separate native iOS and Android apps roughly doubles engineering cost for most product teams — a real constraint for organizations that need to be on both platforms but can't justify two full native teams.
React Native lets one codebase (with some platform-specific code where needed) produce apps for both iOS and Android, sharing logic and, for teams already using React on web, sharing real engineering expertise too.
Fits organizations that need mobile apps on both platforms but don't have the budget or team size to build and maintain fully separate native iOS and Android codebases.
Fits teams with existing React expertise who want to extend into mobile without hiring separate Swift and Kotlin teams from scratch.
Shared codebase across platforms
Most application logic and UI code is shared between iOS and Android, reducing duplicate implementation work.
React component model
Teams with existing React experience (including web teams) transfer that knowledge directly rather than learning two new languages and platform SDKs from scratch.
Native performance for most UI work
UI renders through native platform components rather than a webview, giving meaningfully better performance and feel than hybrid webview-based approaches.
Large ecosystem and community
A mature library ecosystem covers most common mobile needs (navigation, camera, push notifications) without custom native module development.
Native modules still needed sometimes
Some platform-specific capabilities require writing native code directly, meaning the team can't fully avoid native development expertise.
Some platform-specific polish gaps
Achieving pixel-perfect, fully platform-idiomatic feel on both iOS and Android simultaneously takes more deliberate design attention than a single native app.
Performance ceiling for the most demanding use cases
Extremely performance-sensitive apps (high-end games, heavy real-time graphics) are still better served by fully native development.
Open source; primary cost is engineering time, generally less than maintaining two fully separate native codebases.
Cost
Moderate — approachable for React-experienced teams, with added complexity where native modules are required.
Complexity
Works for small teams shipping to both platforms through larger teams maintaining a shared component library across iOS and Android.
Team size
Scales well for most consumer and business apps; the ecosystem and community support hold up as the app and team grow.
Scalability
Products needing both iOS and Android apps without maintaining two separate native codebases
Teams with existing React expertise extending into mobile
Apps where shared logic and faster iteration matter more than platform-specific pixel-perfect polish everywhere
JavaScript/React layer
Application logic and component tree, shared across iOS and Android.
Rendering through native components gives meaningfully better performance than webview-based hybrid approaches. The JavaScript-to-native bridge can become a bottleneck for very high-frequency updates (like complex animations or real-time graphics), where a fully native implementation may be warranted.
Standard mobile security practices apply — secure storage for tokens (not plain AsyncStorage for sensitive data), certificate pinning where appropriate, and the same API security considerations as any client calling a backend.
React Native supports platform accessibility APIs (VoiceOver on iOS, TalkBack on Android) through its accessibility props, but — as with any framework — correct usage (labels, roles, focus order) remains the team's responsibility, not something the framework guarantees automatically.
Scales well for most consumer and business app needs, both in team size (shared component libraries across platforms) and user base — the ecosystem's maturity means common scaling patterns (code splitting, lazy loading) are well-documented.
Open source with no licensing cost. The primary cost is engineering time, which is typically lower than maintaining two fully separate native codebases for equivalent functionality — the trade-off is occasional native-module work that requires platform-specific expertise anyway.
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