What are the best bitcoin mobile apps?

For me, I am waiting for Fitcoin to come to android.
Bitcoin for Workout is a very good idea.

http://bitforum.info/t/workout-and-get-paid-with-bitcoin-through-fitcoin-app/536

And ABRA app will be a great help too.
http://t.co/d9KEdvt57P

What do you think are the best bitcoin related mobile app?