Coinbase - Bitcoin, safe and easy.
Splittable - Shared living made simple
BuySellHodl - Ultimate Cryptocurrency App - Coin Ratings, Games, News
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!
ListAcross - Sell anything, everywhere.
/Tab - The simple way to split a bill among friends.