I diligently studied and practiced with this app prior to my latest visit to KSA. When I tried speaking to colleagues I soon discovered that I had learned a dialect that is not understood by Saudis. Thinking it was my accent to blame I played some phrases from the app and got some good advice from a Saudi:"Get a new app."
I did and the dialect is very different. Too bad, because this app is much superior in terms of usability.
Old Scrum about Learn Arabic Phrases & Words