Determine in code if app runs in Expo Go or not (in production build)

Question

I would like to determine in react native code if the app is running in Expo Go or as a stand-alone iOS/Android app.

I can’t use __DEV__, because I would like to be able to determine this also for a production build.

Answer 1

You can use Expo's AppOwnership from Constants

import Constants from 'expo-constants'

const isRunningInExpoGo = Constants.appOwnership === 'expo'

source

Answer 2

Since classic builds are now deprecated and everyone will start using EAS Builds, you will need to use Constants.ExecutionEnvironment instead of appOwnership which is always null in builds done via EAS.

So you could use the following to check if in production:

ExecutionEnvironment.Standalone ＝== "standalone"

Documentation can be found here