Note: If you have an iPhone4 or iPhone5, please purchase Longhand Math instead of Longhand Subtraction. Longhand Math performs long addition, subtraction, multiplication and division. You get the functionality of all four for the price of one, but it runs only on the iPhone4 and iPhone5.

Longhand Subtraction subtracts two multi-digit numbers, and if borrowing is necessary, displays the borrowing and the crossing out, just as you would subtract them column-by-column using a pencil and paper. All of the action occurs on one screen making it very simple to use. This application is great for elementary school students, their teachers, and their parents.