Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!
Paribus - Find out for free if online stores owe you a refund!
/Tab - The simple way to split a bill among friends.
Lolli - Earn bitcoin when you shop online
EquiTable - Split the bill fairly
Slice Watch - Get an email when an item you've added drops in price 💸