PageOnce -- Found this one here the last time they had an app thread. It's an awesome app where you enter in your info for your bills (Cox, Entergy, etc.) and you can even enter in your bank account info. You get reminders pop up on your phone when you're getting close to bills being due, and it tells you automatically what the balance in your account is after paying bills.
Honorable mention: Pou, Pandora, Snapchat
This post was edited on 5/7 at 11:31 pm