I downloaded one out of curiosity. I downloaded the VFR Communications app (Cheapest one!) , it's ok, for some reason the same questions keep coming up time after time. And some questions give the same possible answer twice.
Overall I think it could be a useful tool but they need to sort out these little problems.
Like yourself I am not overly suited to sitting with a book learning, but . . . I had to
it's the only way I am afraid!