4 stars: Hi. There is an issue in Market in Vietnam Calculation game. Some time the answer is not the right one. for example the right one is 25000 and the game answers that right one is 24099. Anyway this app is very good!
5 stars: wonderful.. i came to know that m also a tough fellow after playing the game......amazingly interesting😂😂😂😂😂
5 stars: Wooo, It's working My Knowledge is improving..Yes Yes...I like this game but, I can't play all game.
5 stars: I think this the best game I had ever seen this is very challenging but it needs to improve the levels by increasing toughness
5 stars: It is a very nice game and I am never boared of playing this game.it will also help to increase our is and intelligence
5 stars: goog app for brain game.....................................................................................................................................................................................................n I like it ....................................
5 stars: this is very good game for brain exercise..
5 stars: 5 ⭐ for everything.... Because this is the only best brain boosterrr👍👍😘😘😘
5 stars: I like the fact that some of the games are easy so you can build on that to the more difficult challenges.
5 stars: I like this app..to improve our knowledge...and test our knowledge
5 stars: This is a brilliant game for Best use of your brain
5 stars: this game is much useful for increase brain power