Extremely easy. Same as the screenshot.
But Extremely addictive.Please don't install this game if you don't like addictive games.
Be warned, once you start playing, you will not be able to stop! This game is very addicting!
Oh, bet you wont get 20!
[How to play]
> Step1. See the mathematics in the game.
> Step2. Think about it!
> Step3. Make judge in one second!!
> Step4. Beat your friends!!!

Ratings and Reviews

3.1 out of 5
45 Ratings

45 Ratings

Matthew Hodges ,

Doesn't even open up

When I downloaded the app I had intentions that it would be challenging but I would learn on the down low but the app doesn't even open. Its a shame because it looks good.

Willie Bocade ,


I don't understand how this game isn't main stream yet. This is actually better than Flappy Bird. I don't think most people get the concept.

Chrissylou2 ,

Doesn't deserve even one star

Game wouldn't download, when it finally downloaded it wouldn't open. Deleted, did a hard reset, redownloaded-here we go again! Wouldn't download and then when it did it wouldn't open. Tried on my husbands phone SAME THING!! How does this show a three star rating with all the one star reviews saying the same thing!!

App Privacy

The developer, Xun Yang, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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