I want to check if my app was opened from the TestFlight app or the AppStore app.
I made a test and found this information in didFinishLaunchingWithOptions when launching it from TestFlight:
if launchOptions?[UIApplicationLaunchOptionsKey.sourceApplication] as? String == "com.apple.TestFlight" {
    // ...
}
But I don't know how to check if the app is opened from the AppStore. What's the identifier?
Thanks for your help.