Its called Poker Income Pro. I have it on my Iphone5 but I am damn sure also for droid.
I think its like 10$. Its awesome.
Its a good tool to calculate your bankroll, what your hourly earnings are and where you have played. It keeps track of ALOT and is pretty damn user friendly. I turn it on, enter my buy in for live cash games.. and when I am done, update it as such.
There is a free version as well, but I def recommend the full.
I just want to keep my online BR separate from live.