Expo

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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
• 🗺 Project Layout
• 🏅 Badges
• 👏 Contributing
• ❓ FAQ
• 💙 The Team
• License

📚 Documentation

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

• Getting Started
• API Reference
• Using Custom Native Modules

🗺 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](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.

Changelog

Unpublished

🛠 Breaking changes

🎉 New features

🐛 Bug fixes

💡 Others

13.1.5 — 2025-04-30

This version does not introduce any user-facing changes.

13.1.4 — 2025-04-25

This version does not introduce any user-facing changes.

13.1.3 — 2025-04-14

This version does not introduce any user-facing changes.

13.1.2 — 2025-04-11

💡 Others

• Removed warning about running on Expo Go. This is handled in packages using the Task Manager. (#36038 by @chrfalch)

13.1.1 — 2025-04-09

This version does not introduce any user-facing changes.

13.1.0 — 2025-04-04

🐛 Bug fixes

• [iOS] Added guards to avoid crashing the app if we try to write task results that contains NSNull values (#35477 by @chrfalch)

💡 Others

• [Android] Started using expo modules gradle plugin. (#34176 by @lukmccall)
• [apple] Migrate remaining expo-module.config.json to unified platform syntax. (#34445 by @reichhartd)

13.0.0 — 2025-01-21

💡 Others

• [android][background-task] Added callback parameter to new executeTask method after adding package expo-background-task (#33438 by @chrfalch)

12.0.3 — 2024-11-13

💡 Others

• [Android] Added implementation of executeTask method in TaskManagerUtils (#32849 by @chrfalch)

12.0.2 — 2024-11-05

💡 Others

• Correct the return type of TaskManagerTaskExecutor. (#32557 by @Simek)

12.0.1 — 2024-10-31

💡 Others

• [android] Added implementation in package to look up TaskService instance from expo-modules-core (#32300 by @chrfalch)

12.0.0 — 2024-10-22

🛠 Breaking changes

• Bumped iOS deployment target to 15.1. (#30840 by @tsapeta)

🐛 Bug fixes

• isAvailableAsync() now returns false in Expo Go for Android. (#29823) by @vonovak
• Add missing react-native peer dependencies for isolated modules. (#30486 by @byCedric)

💡 Others

• Keep using the legacy event emitter as the module is not fully migrated to Expo Modules API. (#28946 by @tsapeta)

11.8.2 - 2024-05-29

🐛 Bug fixes

• [Android] Fix the task manager events not being sent to the JS side. (#29024 by @behenate)

11.8.1 — 2024-04-23

This version does not introduce any user-facing changes.

11.8.0 — 2024-04-18

💡 Others

• [iOS] Add privacy manifest describing required reason API usage. (#27770 by @aleqsio)
• drop unused web name property. (#27437 by @EvanBacon)
• Removed deprecated backward compatible Gradle settings. (#28083 by @kudo)

11.7.1 - 2024-01-25

🐛 Bug fixes

• On Android, added events to module definition to clear warnings. (#26654 by @alanjhughes)

11.7.0 — 2023-11-14

🛠 Breaking changes

• Bumped iOS deployment target to 13.4. (#25063 by @gabrieldonadel)
• On Android bump compileSdkVersion and targetSdkVersion to 34. (#24708 by @alanjhughes)

11.6.0 — 2023-10-17

🛠 Breaking changes

• Dropped support for Android SDK 21 and 22. (#24201 by @behenate)

💡 Others

• Transpile for Node 18 (LTS). (#24471 by @EvanBacon)
• Migrated codebase to use Expo Modules API. (#24157 by @lukmccall)

11.5.0 — 2023-09-04

🎉 New features

• Added support for React Native 0.73. (#24018 by @kudo)

11.4.0 — 2023-08-02

This version does not introduce any user-facing changes.

11.3.0 — 2023-06-21

🐛 Bug fixes

• Fixed Android build warnings for Gradle version 8. (#22537, #22609 by @kudo)

💡 Others

• Update defineTask to accept type arguments. (#21958 by @kazuma0129)

11.2.0 — 2023-05-08

This version does not introduce any user-facing changes.

11.1.1 — 2023-02-09

This version does not introduce any user-facing changes.

11.1.0 — 2023-02-03

💡 Others

• On Android bump compileSdkVersion and targetSdkVersion to 33. (#20721 by @lukmccall)

11.0.1 — 2022-10-28

This version does not introduce any user-facing changes.

11.0.0 — 2022-10-25

🛠 Breaking changes

• Bumped iOS deployment target to 13.0 and deprecated support for iOS 12. (#18873 by @tsapeta)

💡 Others

• [plugin] Migrate import from @expo/config-plugins to expo/config-plugins and @expo/config-types to expo/config. (#18855 by @brentvatne)
• Drop @expo/config-plugins dependency in favor of peer dependency on expo. (#18595 by @EvanBacon)

10.3.0 — 2022-07-07

This version does not introduce any user-facing changes.

10.2.1 — 2022-04-25

🐛 Bug fixes

• Fixed another Android 12+ runtime crash caused by PendingIntent misconfiguration. (#17164 by @kudo)

10.2.0 — 2022-04-18

🐛 Bug fixes

• Fixed Android 12+ runtime crash caused by PendingIntent misconfiguration. (#17052 by @bbarthec)

💡 Others

• Updated @expo/config-plugins from 4.0.2 to 4.0.14 (#15621 by @EvanBacon)

⚠️ Notices

• On Android bump compileSdkVersion to 31, targetSdkVersion to 31 and Java version to 11. (#16941 by @bbarthec)

10.1.1 - 2022-02-01

🐛 Bug fixes

• Fix Plugin with id 'maven' not found build error from Android Gradle 7. (#16080 by @kudo)

10.1.0 — 2021-12-03

This version does not introduce any user-facing changes.

10.0.1 — 2021-10-01

This version does not introduce any user-facing changes.

10.0.0 — 2021-09-28

🛠 Breaking changes

• [plugin] Moved UIBackgroundModes location to the expo-location plugin (#14142 by @EvanBacon)
• Dropped support for iOS 11.0 (#14383 by @cruzach)

🎉 New features

• Use stable manifest ID where applicable. (#12964 by @wschurman)

🐛 Bug fixes

• Fix building errors from use_frameworks! in Podfile. (#14523 by @kudo)

💡 Others

• Updated @expo/config-plugins (#14443 by @EvanBacon)

9.2.0 — 2021-06-16

🐛 Bug fixes

• Enable kotlin in all modules. (#12716 by @wschurman)

💡 Others

• Migrated constants interface from unimodules-constants-interface to expo-modules-core. (#12876 by @tsapeta)

9.1.0 — 2021-03-10

🎉 New features

• Converted plugin to TypeScript. (#11715 by @EvanBacon)
• Updated Android build configuration to target Android 11 (added support for Android SDK 30). (#11647 by @bbarthec)

🐛 Bug fixes

• Add TypeScript definition of executionInfo.appState. (#11670 by @Noitidart)
• Accept generic data type of task body objects. (#11669 by @Noitidart)

9.0.0 — 2021-01-15

🛠 Breaking changes

• Dropped support for iOS 10.0 (#11344 by @tsapeta)

🎉 New features

• Created config plugins (#11538 by @EvanBacon)

8.6.0 — 2020-11-17

🎉 New features

• Added isAvailableAsync method. (#10657 by @PranshuChittora)

8.5.0 — 2020-08-18

This version does not introduce any user-facing changes.

8.4.0 — 2020-07-16

🐛 Bug fixes

• Added some safety checks to prevent NullPointerExceptions on Android. (#8864 by @mczernek)
• Fix tasks not being removed from memory when unregistering them. (#8612 by @mczernek)

8.3.0 — 2020-05-29

🐛 Bug fixes

• Upgrading an application does not cause BackgroundFetch tasks to unregister. (#8348 by @mczernek)