The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Light Year Software:
Works on every iOS device with iOS 3.0 or later!Help your elementary student memorize basic math skills with flashcards and timed quizzes. You can customize drills by specifying the maximum number and if one number should always be the same.For timed quizzes, you choose the number of questions and the time limit.On iOS 4.2 or later, you can print 40 question worksheets to AirPrint-compatible printers.Addition is free. Subtraction, multiplication and division can be unlocked within the app for one low price.