Bobby - Keep track of your subscriptions
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!
Rocket Money - Find your paid subscriptions and cancel with one click
Kittysplit - The easiest way of sharing costs with a group of friends
Budg - Personal financial assistant right in your pocket!
ihatemoney - Manage your shared expenses, easily