Expo
PopularBuild native apps with React
About Expo
Expo is the fastest way to build native apps for iOS, Android, and the web with React. It’s built for developers who want a single, predictable workflow from coding to release, without wrestling with native project setup.

Key Features
Developers rely on a unified mobile toolchain that covers building, testing, and shipping across platforms, so teams stay in sync from idea to production:
CLI & Dev Tools
Build, test, and bundle across iOS, Android, and web using the Expo CLI and developer tools.
Simulators for Agents
Test on simulators made for agents, enabling rapid cross-platform iteration.
Mobile CI/CD
Ship with a CI/CD workflow tailored for mobile apps.
Observe
Telemetry and release analytics to monitor app performance after each deployment.
Summary
Best for product, engineering, and operations teams shipping cross‑platform React‑based native apps.