Most bill tracking apps either require you to give them sensitive banking information to track your bills or have overly complex features that most people don't need. Bill Collector is a simple bill tracking app that lets you keep track of your current monthly bills and what they cost you.
Once you add your bills, you'll be able to see them all in a single location. Once you pay your bill, simply swipe the bill and mark it as paid and your current bill will be deleted and another estimated bill will be created for the following month.
Quick actions allow you to toggle the estimate indicator so that you can keep track of which bills are final and which ones you're still waiting on, mark bills as paid or delete bills.