You would need the following installed and configured for the app builder to build successfully.
To build for iOS & Mac desktop:
- Apple developer account
- Xcode and XCode CLI tools (NOTE: Please see instructions for react-native-cli NOT expo-cli)
- An iPhone registered as a development device (Simulator doesn’t have access to camera so a physical device is mandatory)
To build for Android:
- Android Studio to build android apps and the necessary environment variables for react native to detect your android studio. (NOTE: Please see instructions for react-native-cli NOT expo-cli)
- Setting up adb for running on a physical device