One of the most difficult things regarding apps for the iPhone is the lack of ability to sync what you're doing with your computer for other use. When it comes to using a finance based app, not having this ability makes the entire app useless. Luckily, QuickBank is a finance app for the iPhone that allows you to not only keep track of everything on your iPhone, but actually export it to your computer as well.
QuickBank doesn't have a crazy graphical interface or anything of the sort. You're basically dealing with a very simple and easy to use app that just monitors your finances. It doesn't do anything automatically though, so you'll have to keep tabs on yourself and update it as you move forward.
When you load it up you won't have any accounts set for you either. You'll have to manually name and create each of your accounts. From there you can even create categories for each individual purchase or income that you put down. That way you're not just looking at money coming and going from your account, but from what you're actually spending it on.
There are a few other functions, such as the reports, that show you everything in a different light. But the shining feature of this app is it's ability to export the information directly to your computer. Now you've got a way to keep track of everything on your main computer and your mobile device. If you need to keep track of your finances, this is a much better solution then using the old pen and paper method.