GetSum is a great and well thought math game that will give you challenge as well as make your brain work fast. Designed for all ages, GetSum will give maximum brain exercise every time you play.
The puzzle has two modes with each mode with 50 levels. Every time you play any level, the puzzle will keep your highest score. The next time you play the same level, you have a challenge to beat your last highest score. No difference for those people who go to the gym for improved performance.
Try it and let me know what you think. Enjoy!