ExpoJS

Open-source platform for building universal native applications with React from a single JavaScript or TypeScript codebase. Runs on Android, iOS, and the web, with a full-stack SDK and cloud services to support development, building, submitting, and updating apps at every stage of the lifecycle.

Expo is the framework recommended by Meta for React Native development and is used by thousands of enterprises and startups. Most React Native developers adopt Expo due to its integrated toolchain: develop on device via Expo Go without opening Android Studio or Xcode, ship over-the-air updates without store approval for fixes, and automate builds and submissions with cloud workflows. The community spans tens of thousands of developers and hundreds of thousands of projects.

Key capabilities:

• 100+ production-ready SDK modules: camera, push notifications, automatic deep linking, and more
• Write native code with the Expo Modules API and config plugins using React, Kotlin, or Swift
• Expo Router for file-based routing and API routes built into every project
• EAS Build, Update, and Workflows for cloud builds, OTA updates, and automated store submissions
• Expo Go for on-device development and Snack for trying Expo in the browser with zero local setup

Build teams use Expo to ship consumer and enterprise apps from e-commerce to social applications. A single codebase targets all platforms while keeping development lightweight: no need for Xcode or Android Studio to get started. API routes, file-based routing, and native module customization fit well into existing React and TypeScript workflows.