Expo and this mobile app
1. Basic Expo (for this repo)
What Expo adds on top of React Native
Expo wraps React Native with a curated toolchain: the Metro bundler serves your JS to a dev client (Expo Go or a dev build), native modules ship as versioned Expo packages, and you avoid hand-editing Xcode/Android Studio for common features. Production binaries can be built locally or via EAS Build (cloud); EAS Update can ship JS/asset updates without a full store release (optional for this project).