React Native + Expo have become the #1 choice for building mobile apps with JavaScript.
Why Expo?
Quick setup without Xcode or Android Studio
Integrated development tools (hot reload, debugging)
Large library of native modules
Starting from Scratch
First: Install Expo CLI
Then: Create a new project with expo create-app
After: Run your app directly on your phone with Expo Go
Recommended Structure
/app โ App screens (Expo Router)
/components โ Reusable components
/hooks โ Custom hooks
/utils โ Helper functions
Deployment
Expo lets you publish your app to the App Store and Google Play without native build complexities.
Conclusion
If you're a web developer looking to enter mobile, React Native + Expo is the fastest path.
