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!
Sense - Sense installs in your home's electrical panel and provides insight into your energy use and home activity through our free iOS/Android apps.
Dinngo - Splitting payments the fun and easy way
Lockitron Bolt - Unlock your door with your phone for only $99
/Tab - The simple way to split a bill among friends.
Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.