Expo React Native Framework

Expo is a full-stack framework for building React Native applications that provides over one hundred production-ready libraries, cloud build services, over-the-air update delivery, and automated app store submission from a single development environment. The framework supplies SDK modules for camera access, push notifications, deep linking, file system, location, contacts, biometric authentication, and device sensors, each maintained with full TypeScript types and consistent cross-platform APIs for iOS, Android, and web. The Expo Modules API and config plugins let developers write native code in Kotlin and Swift and integrate native dependencies without ejecting from the managed workflow, bridging the gap between no-native-code simplicity and full native access. The Expo Go application lets developers test their app on a physical device by scanning a QR code, with hot reloading that reflects code changes in under a second without rebuilding native bundles. Expo Orbit launches iOS simulators and Android emulators without opening Xcode or Android Studio. EAS Build compiles application binaries in the cloud, supporting custom native code and credentials management, with build times tracked per platform. EAS Update delivers JavaScript bundle updates over the air, so bug fixes and feature changes reach users without app store review delays, with channel-based rollout for staged deployments. EAS Submit automates app store uploads with credential management for App Store Connect and Google Play Console. EAS Workflows define CI pipelines that trigger builds, tests, and deployments on Git events. The platform serves over five hundred thousand created projects and is the only React Native framework recommended by Meta. Over seventy thousand developers participate in the community Discord, and enterprise customers receive SOC 2 Type 2 and GDPR compliance guarantees.