Spend is another budget tracking app for the iPhone that allows you to keep track of what you've got left to spend for a specific budget for a given period of time. It's a great and handy way to keep an eye on exactly what you've got left without going over, and it even provides you color coded warnings incase you're getting close.
You can set out all the different budgets that you have currently available, whether it be Food or your weekly Comic Book budget. The lite version of the app limits you at 5 different categories, but the full version doesn't have any restrictions. You can set either a daily or weekly budget, and it will give you a read out of exactly how much you have available for that time period.
Once you've set your budget, you can then start marking down what you spend. This is great if you want to keep track of your spending trends, as it does mark it by what day and give you the ability to write out what you spent it on. It will also alert you by turning red when you're in your last few dollars.
Spend even offers an export function, making it pretty cool over all. As a budget tracking app, it's got all the necessary features to make it worth having, but it's not something comprehensive enough for people looking to track all of their finances long term. Probably more something geared towards young adults.