Play Calc app for iPhone and iPad

Play calc, this game is the four numbers specified by the add, subtract, multiply and divide method to get 24. Is to find a way to manipulate four integers so that the end result is 24.
Game rule: given four numbers between 1 to 10, find a formula to get result as 24 using all four numbers with +-×÷ and ().
For example: if the four numbers are 1, 3, 6, 8, then 6×(8-3-1)=24 is a solution. if are 1, 1, 1, 1, then is no way to get 24, so just click equal sign button.
Used for the first time will automatically enter the demonstration phase, according to the need of prompt the click of a button you can pass and officially began.
The total score is click on the upper left corner can view the history.