BillMonk

BillMonk keeps track of all your friends IOUs and debts so you dont have to remind them that they owe you. BillMonk is a social money management tool that allows a group of friends to keep running tabs on who owes who how much and for what. Users collaborate online deciding how to split past and current bills such as taxi fares or restaurant bills.In April 2013, BillMonk was acquired by BillPin. The valuation of BillMonk was undisclosed. Other terms of the deal were not released.