The Famously Simple Budget App is an ultra-simple utility for keeping track of your spending. Just set the amount you want to spend and the time frame and you're good to go. The app comes with Groceries, Dining Out, Transportation, Kids, Pets, and Other as spending categories. You can add more, adjust names, whatever. Once you're set up, enter purchases one by one. The Budget app totals them up and shows you how much money you've spent, and how much you have left. Just a few simple screens is all you need to stay on top of your spending.