I downloaded couple of apps which is related with managing my expense. I think that 'pennies' is the best by far. it has nice interface. you can set the monthly budget. when you keep spend money, gauge just like fuel gauge in a car head down to empty. I don't have to explain all of it. just see for yourself. it costs $2.99. it is worthy to have. here is link. http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=287129922&mt=8 it is also developer link. http://designbyaknife.com/pennies/ I hope you enjoy it.