For the last couple of years, I've been using Mint to manage my bank account and credit cards. It offers a quick and easy way for me to know how much money I (don't) have at any given moment, as well as constantly monitor my credit cards. For me, simple is good - I don't bother with investments of any kind, so I have no use for a service that offers that sort of management. For those who do, though, the official Personal Capital app just hit the Play Store.
In a nutshell, Personal Capital makes it easy to keep an eye on all your finances - everything from checking accounts and credit cards to any investments you may have.