If you find you have trouble keeping track of your spending habits, the Budget Boss is a great app you can download directly onto your iPhone to help you control your spending.
The Budget Boss works by keeping track of your various spending habits. Users can input how much they spend on food, credit card expenses, gas, car insurance, shopping, etc into the Budget Boss' simple chart system. The app will keep track of your spending habits and help you see, using a trajectory, which areas you tend to spend most of your money on. This is ideal if you want to cut back on dining out or shopping and put that money into other areas of your life. Budget Boss can also help you plan out paying off loads or large credit card bills by calculating interest costs and monthly payments.