DebtBook

DebtBook is a small app that helps you manage your debts and debtors, focusing on simplicity and ease of use instead of a flashy design and a bunch of little-to-useless features.
Simply press "+" button when you pay for someone, lend your friend some money or borrow money yourself. Enter the name of the person, choose whether you give or take money, enter amount – and that's it! Change currency if necessary, choosing from one of your favorites or any other world currency. Change the date or enter a comment if you want, for your later convenience. Enter multiple names to split the amount between multiple persons. Add "Me" or "I" there to include yourself in the split!
Swipe on the debts list row to remove a debt, or use actions like "Pay this Debt" and "Pay in Full" so that the whole history is saved. You can then share it via Email, iMessage or just copy it and paste wherever you like.