The "Beyoncé" of personal finance apps; this little powerhouse allows you to keep track of all your financial activity from all your accounts: checking, savings, retirement—you name it! Every transaction is automatically recorded and categorized. Mint makes note of your spending patterns and creates a budget. Additionally, on the iPad, it generates graphs to give you visual representations of your net worth and cash flow. For those worried about security, the app is password protected and there is a way to deactivate access from your phone through the Mint website. It is a fantastic way to keep tabs on your overall financial health and be able to spot potential problems. (Plus, it's free!)