When I tried to build up my bankroll long ago, I used excel sheets to calcuate max buyins for tournaments SnGs and cash games.
But multiple poker accounts and different currencies made it difficult handling it, so I wrote my own desktop app called "Bankroll Disposer" which I now ported to an Android App. Now you can view monthly profits and deposits/withdraws to be in control of your incomes/losses.

Its a freemium version, which you can use for basic bankroll management, whereas more sophisticated features like profits, long term charts you will get in premium version for about 3$.

More here!

As I reached alpha stage I now need some testers willing to test it to reach beta stage.
All you need is an Android Phone with a Google-Account and time to play poker with the help of Bankroll Disposer.

Please write to office[at]kerschsoft.at with a short description how and why you would use the app. When sending a final report or even better bugs/issues you will receive a small thank you gift of 10€ (with moneygram) and a promo code as soon as App is available.

Thx for your help!