The user is given clues and must try to work out the random number generated by the app. There are six clues altogether but the aim is to work out the number in as few clues and guesses as possible. There are nine levels to choose from to suit users of different ages and abilities.
Each time the user figures out a number, part of a picture is revealed and the user continues to work out the next number until the whole picture is revealed. A 100-box is included to help with the counting if needed.
The strand units covered include:
Greater/Less than, Odd/Even, Place Value, Rounding, Division/Multiplication, Sum/Difference/Product, 1/10's and 1/100's, Prime and Square Numbers.