CinnaAyn

I use it for Spanish and love it! However, I tried the Chinese app and found it not equipped to handle languages where intonation changes meaning.

I have it for Spanish and Arabic. I think it's good a good program for those who can do intensive study. For me, I need to learn in little spurts and it doesn't lend itself well to that. It does keep the things varied though and changes it up while you are learning. I just don't have the attention span for it.