Expo

Expo: The open-source framework for building universal native applications (iOS, Android, web) with a single React Native codebase.

Expo is the comprehensive development platform that accelerates building, deploying, and testing universal native applications using React Native. It eliminates complex native setup (iOS, Android) by providing a managed workflow and the Expo SDK: a vast library of pre-built APIs for device features like Camera and Notifications. Developers utilize the Expo CLI to start projects and Expo Go to instantly test changes on real devices via a QR code scan. This streamlined environment ensures one JavaScript/TypeScript codebase efficiently targets all major platforms.

https://expo.dev