What is React Native, and why use it?
One codebase, two native platforms
React Native is a framework for building mobile apps using JavaScript and React, but instead of rendering to the DOM it renders to real native UI components on iOS and Android. That means one team, largely one codebase, and near-native performance and look-and-feel — instead of maintaining two separate native apps or shipping a webview wrapped as an app.
Teams reach for React Native when they already have React/JavaScript expertise and want to ship to both platforms without doubling engineering effort. It's backed by a huge ecosystem — Expo for fast setup and OTA updates, a large library of native modules, and first-class tooling for debugging, testing, and performance profiling.
To work productively in React Native you should be comfortable with JavaScript and core React concepts (components, state, props, JSX) first — the mobile-specific layer on top is mostly about components, styling, navigation, and platform APIs rather than a different language.
The React Native Roadmap
Work through these in order — each step builds on the last
Prerequisites
Everything below assumes you're already comfortable with JavaScript, CSS, and core React.
Environment Setup
Pick a toolchain — Expo for speed, the CLI for full native control — and get an app running on a device.
Development Workflow & Debugging
Iterate fast, and know where to look when something breaks.
Core Components
The building blocks every screen is assembled from.
Listings
Render and scroll through data efficiently — one of the most common mobile UI patterns.
Platform-Specific Code
Handle the moments where iOS and Android genuinely need different behaviour.
Styling
Layout mobile screens with Flexbox, and keep the UI usable for everyone.
Interactions & Navigation
Make the app feel native — touch, gestures, motion, and moving between screens.
Networking & Security
Talk to a backend, stay aware of connectivity, and keep user data safe.
Storage
Persist data locally, whether that's simple key-value pairs or a full local database.
Testing
Catch regressions before they reach a device — or the app stores.
Performance & Native Modules
Diagnose jank, speed up builds, and drop into native code when JavaScript isn't enough.
Publishing Apps
Get your app in front of real users on both major app stores.
GitHub Projects
Real, buildable projects to put on your own GitHub
Expo Starter App
Bootstrap an app with create-expo-app and build out a few real screens — a good rehearsal for environment setup and core components.
Infinite-Scroll List App
Fetch data from a public API and render it with FlatList, pull-to-refresh, and pagination to lock in the listings step of the roadmap.
Offline-First Notes App
Build a notes or to-do app that persists locally with AsyncStorage or expo-sqlite, and syncs when connectivity returns.
Tested & Published App
Add Jest unit tests and a Detox E2E suite to an existing app, then take it through a real build and store submission.
Frequently Asked Questions
Common questions from people starting out with React Native
Do I need to know React before learning React Native?
Yes, ideally. React Native uses the same component model, state, props, and JSX as React for the web — the main differences are the components you render (View and Text instead of div and span) and the mobile-specific APIs layered on top.
Should I start with Expo or the React Native CLI?
Expo is the faster on-ramp — no native build tooling required, and it covers most common app needs through its SDK. The bare CLI workflow gives you full control over native code, which matters once you need a native module Expo doesn't support.
React Native vs Flutter — which should I learn?
React Native renders real native components and lets JavaScript/React developers reuse existing skills, while Flutter draws its own UI with Dart and a single rendering engine across platforms. React Native fits teams already in the JS ecosystem; Flutter suits teams wanting pixel-identical UI across platforms out of the box.
Is React Native still relevant in 2026?
Yes — React Native remains one of the most widely used cross-platform mobile frameworks, backed by Meta and a large community, with continued investment in its new architecture, Expo tooling, and performance improvements.
Can React Native apps really perform like native apps?
For most apps, yes — React Native renders actual native UI components rather than a webview. Performance issues usually come from JavaScript-side bottlenecks like unoptimized lists or heavy re-renders, which is why profiling and list optimization are part of the roadmap.
How do I prepare for a React Native interview?
Be solid on React fundamentals first, then be ready to discuss the Expo vs. bare workflow tradeoff, how navigation and state work across screens, how you'd debug a performance issue in a FlatList, and how you'd bridge to a native module — plus have a published or at least fully built app to walk through.
Track complete
From your first Expo project to a tested, performant app on both app stores — that's the core of what employers expect from a React Native developer. Keep building, and pair it with backend or native module skills to round out a full mobile profile.
Where next?
Keep exploring by domain or drill into a single skill