[urthos]

Splitwise (http://splitwise.com) also has a roommate bill-tracking tool, of which I'm the co-founder. We have Android and iPhone apps that sync with the cloud, and you don't need to connect with Facebook to sign up. Doesn't do chores or to-dos though, if that's something you want in your roommate site.

Let me know if you'd like to meet sometime @rschmulker, I'm based in Cambridge MA and Providence RI. You can reach me at [e-mail].