Piggie
Piggie makes tracking expenses very easy.
Tracking expenses has always been a weak spot for me, but since downloading Piggie, I can't live without.
The interface is plain and simple, and with hitting only two buttons, tracking every penny is easier than ever.
After entering data for a while, Piggie makes it easy to display the different kinds of expenses, making you more aware about how you spend your money
Dropbox integration for backup, as well as the possibility to switch currency are great features as well.