Check
How it works: To pay bills from your mobile device, try Check.
The app tracks your accounts, showing you how many days until each is due and allowing you to pay now or schedule a payment.
Check boils your bills down to what you owe and when, making it easy to use on a small screen.
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The app's main page clearly displays your bank balance and the sum of pending bills. Its simple design lets you get a read on your finances even at a brief glance, says Mark Schwanhausser, a director of financial services at Javelin Strategy & Research.
The downside: You'll need to plan ahead: Payments made with Check take two to five days to process.
Platforms: iOS, Android