I am enjoying the Hebrew course very much. I am not new to the language but I haven't studied it for many years.
I hope that there will be slower audio recordings in future, as there are with other languages on Android. The current speed is a bit difficult to understand when you have to type what you hear and it must be so much harder for beginners.
As I unable to type with niqqud (and I don't really want to!), it's a bit disappointing when some of the answers are marked 'almost right' because of missing niqqud e.g the two versions of לך. I hope that I won't be marked wrong for this in future as I reach more advanced levels.
I know the alphabet well, but I do wonder how complete beginners cope, when I first learned the alphabet it was at a very slow pace. Perhaps more lessons introducing the letters would be helpful, but those who are new to the language are in a better position to judge this than I am.
I really don't wish to be critical, the team have done an amazing job! I am looking forward to relearning what I once knew in Hebrew and much more in addition!