ThumbMath is an app that keeps your brain sharp. Play it while you wait for your friends. Run your fingers through the numeric pad designed for 2 thumbs.The app is designed with multiple levels of difficulty. Each session only runs for 1 minute.Try it out ! See how much you can score in 60 seconds ! Challenge yourself each time you're waiting for your food to be served or while you're waiting for your bus or train to arrive. Sharpen your mind each minute of the day!