CalcGame app for iPhone and iPad

CalcGame brings fun and competition to math!
CalcGame is a puzzle with numbers. And it is a great tool for children to have fun (and competition) with math!

You get 4 different digits. With one or more of these digits and optionally one or more of the calculator buttons +, -, /, x, (, ) you must make the value "1". When you succeed, you go to the next level and must create the value "2", and so on.
The goal of the game is to reach the highest possible level with the given digits.

When you are stuck, you can start a new game with different digits.

Example:
With the digits 1, 3, 5, 7 you can reach level 79, with solutions like
1 = 1
11 = 1+3+7
12 = 17-5
18 = 3x(7-1)
39 = 7x(5+1)-3
64 = (7+1)x(3+5)
79 = 71+3+5

Games can be resumed at the level that has been reached earlier.

Different players can be defined. For each player the reached levels are stored.