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!
Bumble - Bumble is a social network that allows you to feel empowered while you make those connections, whether you’re dating, looking for friends, or growing your professional network. One first move on Bumble could change your life.
/Tab - The simple way to split a bill among friends.
Tinder - Tinder is how people meet. It's like real life, but better.
EquiTable - Split the bill fairly
Hinge - Find people you want to date through your friends on Facebook.