FriendTab

FriendTab is a simple Mono for Android application to help you track what you owe to your friends and what they owe you. It's for those folks like me who like to keep things even.

Alternatively, it's a testbed for various technique available in Android and put down in C# form.

GitHub project: https://github.com/garuma/FriendTab
Usage guide: https://github.com/garuma/FriendTab#how-to-use