How to check if an iOS app is installed in Expo and React Native

TL;DR Use Linking.canOpenURL() with the target app's URL scheme to check if another app is installed. In Expo with continuous native generation (CNG), you configure LSApplicationQueriesSchemes in app.json — no need to touch Xcode or Info.plist directly. Run npx expo prebuild and the native project is generated with your scheme declarations included. This is the React Native version of my SwiftUI…