Math Challenge
Bring your gray matter moving and improve your skills in mental arithmetic and become a math champion.
In the Math Challenge you need to solve in total 50 levels in two different categories. With each level the difficulty increases, for example, by various arithmetic or X and Y terms.
Swipe the terms that not correspond to the result and let the correct terms drop in the Guide.
Hang in to reach a top score!
Available for iOS and Android
https://itunes.apple.com/us/app/math-challenge/id822205947
https://play.google.com/store/apps/details?id=de.live.aglem.Math_Challenge
If you have any suggestions to improve this app or want just give a feedback, please tell me about it 
Best Regards,
Alexander