Do I need a Mac for iOS development?

No. EAS Build compiles iOS apps in the cloud. You can develop, build, and submit iOS apps from any operating system.

Does Expo support TypeScript?

Yes. Full TypeScript support with type checking and IntelliSense out of the box.

A mobile app that lets you test your Expo project on a real device instantly — no build step required during development.

Can I use Expo for production apps?

Yes. Major apps like Discord, Coinbase, and Shopify use Expo in production.

What are over-the-air updates?

Push JavaScript code changes to users instantly without going through app store review. Fix bugs and ship features in minutes.

Does Expo support push notifications?

Yes. Expo Notifications API provides a simple interface for sending push notifications to iOS and Android.

Can I eject from Expo?

Yes. If you need custom native modules, you can eject to bare React Native while keeping Expo libraries and EAS services.

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Developer Tools

Expo — Build Native Mobile Apps With React and JavaScript

Expo is the leading platform for building cross-platform native mobile apps using React Native. It provides a complete development workflow — from scaffolding to building to deploying to both iOS and Android app stores — without touching Xcode or Android Studio.

React Native Without the Pain

React Native is powerful but setting it up is notoriously complex — native dependencies, Xcode configuration, Gradle builds, and platform-specific debugging. Expo abstracts this away. Run npx create-expo-app, start coding, and test on a real device in 30 seconds via the Expo Go app.

EAS Build and Submit

Expo Application Services (EAS) handles the hardest part of mobile development: building and submitting to app stores. EAS Build compiles your app in the cloud — no Mac required for iOS builds. EAS Submit pushes directly to the App Store and Google Play with automated metadata and screenshots.

Key Capabilities

Over-the-air updates push code changes instantly without app store review. Push notifications with a simple API. Deep linking, camera, location, authentication, and 50+ pre-built native modules. TypeScript support. Web support for running the same code as a PWA.

Expo vs Bare React Native

Bare React Native gives full control over native code but requires managing native dependencies manually. Expo manages native code for you but with some limitations on custom native modules. Most startups should start with Expo and eject only if needed.

Expo vs Flutter

Flutter uses Dart language and has excellent performance with its own rendering engine. Expo uses JavaScript/TypeScript with the React ecosystem. If your team knows React, Expo is the natural choice. If starting fresh, both are excellent.

Getting Started

Install Expo CLI: npx create-expo-app my-app
Run on your phone using Expo Go app
Build with EAS for production releases
Submit to App Store and Google Play

Pricing

Expo is free and open-source. EAS Build includes free tier with limited builds per month. Production plans at $99/month add priority builds and team features.