A free app for Android, by Teach Your Monster.

Teach Monster – Number Skills is a new game from the team behind the award-winning Teach Your Monster to Read. Teach Monster – Number Skills is all about helping children develop their number sense and confidence. The game is aligned with the pre-K curriculum and helps children practice the improve their number skills. With the help of the Teach Monster Number Skills app, young children may build a solid foundation through a range of entertaining and interesting exercises. Kids can move on under the guidance of the app at their own pace, filling up any knowledge gaps. The game is fun and easy to play and allows kids to explore and learn in a different way.