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    expo

    expo/expo

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    An open-source framework for making universal native apps with React. Expo runs on Android, iOS, and the web.

    android
    mobile
    frontend
    ios
    web
    app-framework
    expo
    framework
    javascript
    native
    TypeScript
    MIT
    52.5K stars
    14.2K forks
    52.5K GitHub watchers
    Updated 9/28/2026
    View on GitHub

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    Use Cases & Benefits

    • Provides an open-source framework to build universal native apps using React and JavaScript for Android, iOS, and web platforms.
    • Enables seamless cross-platform development with a unified runtime and libraries, simplifying native app creation without separate codebases.
    • Use for rapidly prototyping mobile apps that run on multiple platforms with a single React codebase.
    • Use for teams needing integrated build, deployment, and iteration services via Expo Application Services (EAS).
    • Use for developers wanting to extend React Native apps with custom native modules and advanced native functionality.

    About expo

    Expo logo

    Expo

    Expo SDK version Chat or ask a question License: MIT Downloads

    Try Expo in the Browser  •  Read the Documentation  •  Learn more on our blog  •  Request a feature

    Follow us on

    Expo on X   Expo on GitHub   Expo on Reddit   Expo on Bluesky   Expo on LinkedIn

    Introduction

    Expo is an open-source platform for making universal native apps that run on Android, iOS, and the web. It includes a universal runtime and libraries that let you build native apps by writing React and JavaScript.

    This repository includes the Expo SDK, Modules API, Go app, CLI, Router, documentation, and various other supporting tools. Expo Application Services (EAS) is a platform of hosted services that are deeply integrated with Expo open source tools. EAS helps you build, ship, and iterate on your app as an individual or a team.

    Read the Expo Community Guidelines before interacting in the repository. Thank you for helping keep the Expo community open and welcoming!

    Table of contents

    📚 Documentation

    Learn about building and deploying universal apps in our official docs!

    🗺 Project Layout

    • packages All the source code for Expo modules, if you want to edit a library or just see how it works this is where you'll find it.
    • apps This is where you can find Expo projects which are linked to the development modules. You'll do most of your testing in here.
    • apps/expo-go This is where you can find the source code for Expo Go.
    • apps/expo-go/ios/Exponent.xcworkspace is the Xcode workspace. When developing iOS, always open this instead of Exponent.xcodeproj because the workspace also loads the CocoaPods dependencies.
    • docs The source code for https://docs.expo.dev
    • templates The template projects you get when you run npx create-expo-app
    • react-native-lab This is our fork of react-native used to build Expo Go.
    • guides In-depth tutorials for advanced topics like contributing to the client.
    • tools contain build and configuration tools.
    • template-files contains templates for files that require private keys. They are populated using the keys in template-files/keys.json.
    • template-files/ios/dependencies.json specifies the CocoaPods dependencies of the app.

    🏅 Badges

    Let everyone know your app can be run instantly in the Expo Go app!

    runs with Expo Go

    runs with Expo Go

    [![runs with Expo Go](https://img.shields.io/badge/Runs%20with%20Expo%20Go-000.svg?style=flat-square&logo=EXPO&labelColor=f3f3f3&logoColor=000)](https://expo.dev/client)

[![runs with Expo Go](https://img.shields.io/badge/Runs%20with%20Expo%20Go-4630EB.svg?style=flat-square&logo=EXPO&labelColor=f3f3f3&logoColor=000)](https://expo.dev/client)

    👏 Contributing

    If you like Expo and want to help make it better then check out our contributing guide! Check out the CLI package to work on the Expo CLI.

    ❓ FAQ

    If you have questions about Expo and want answers, then check out our Frequently Asked Questions!

    If you still have questions you can ask them on our Discord and Forums or X @expo.

    💙 The Team

    Curious about who makes Expo? Here are our team members!

    License

    The Expo source code is made available under the MIT license. Some of the dependencies are licensed differently, with the BSD license, for example.

    Star the Expo repo on GitHub to support the project

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