Toshl for iPhone

Expense tracker for iPhone
Apple iPhone and iPod touch are supported, running iOS 3.1.3 and above.

http://toshl.com/iphone/expense-track...
or
http://toshl.com/expense-tracker-app/

TRACK — Easily control your spending
Use Toshl how YOU want to. There are no manuals, all you need to know is how to add an expense.
You use it when you want to use it. If you want to share one account with your family, you can do so. If not, its fine with us. It usually takes just one month to see where your money is going. To help you save we compare the current monthly expenses to the previous. So you'll know when to slow down.

ANALYZE — A new look at your expenses
Toshl helps you with getting an insight into what your're really spending your money on.
We all need simplicity in our lives. Toshl takes the montly burden of spredsheets and "Where the hell is my money?" conversations off your chest. Instead, you get the simplest way to track expenses and some awesome graphs to top it off.

SAVE — Stay inside your budget
You decide how much you can spend. We'll help you to achieve your own goals and congratulate you when you do.
Control your variable expenses with a budget. Toshl will give you a friendly poke, to watch your shopping, when the budget gets dried out. Once you learn how to stay within a budget, you're on the right way to save a fortune.