It is a super hard math game.
You will have to perform the addition or subtraction operation with a given number of digits to get the correct answer. The order of the numbers you choose will be the order of the numbers in the calculation
The number of digits will increase according to the score as below:
* score < 10 : 2 number
* 10 < score < 20 : 3 number
* 20 < score : 4 number
Challenge friends and check leaderboards and achievements.
With Family Sharing set up, up to six family members can use this app.