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.
"Active Subtraction" offers fun ways to learn and practice basic number subtractions. Parents can create different levels to suit different learning needs, or join in to play and have fun with their kids. In this version, we have included the following features: 1. Subtracting from one to twenty 3. Randomized formula to keep your children engaged 3. Highscores to keep track of progress and achievements