App Launcher error when the external app is not available
The app should check if the external app is installed. According to availability of the external app, it should show a proper message to the user. If the external app is not installed, on finishing the questionnaire, the app should not launch the external app.
Should the redirect to the app store page if the external app is not installed (usually the convention in other apps)?
Yes redirecting to the play/app store is a good idea. Are there going to be cases where the app will not be available in the play/app store?
In our case, the app is not available in the play store. And aRMT app cannot wait for installing and downloading the external app. I think it breaks the flow.