Cotrio - The most beautiful way to move your brain and imagination
Sum Fun - A fun number puzzle game for iPhone and iPad.
Kids First - Kids Videos and Nursery Rhymes – Kids First is a free kid education app developed and published by USP Studios.
Sum - Simple Maths Puzzle - How fast can you add two numbers?
Wikids - An encyclopedia that talks to your kids
Griddition - Griddition is a challenging numbers puzzle where you must fill a grid with numbers, Sudoku-style.