4 stars: Exercise curve is a bit too steep with no way to go back to earlier difficulties, leaving you failing and re-trying the same level that is too hard for you instead of getting more exercise on a less challenging stage before moving on. If u dont mind that, it's great.
4 stars: I liked a few things and I really didn't like a few things. I absolutely hated the timer and that it doesn't count if you don't use it. I like figuring out mental math slowly, not frantically trying to multiply double digit numbers in under 10 seconds
5 stars: If you want to train you math skills, this is THE app you want. It's brutally hard though, I love it!
3 stars: It doesn't tell your score and how many and which of the questions you've solved correctly.
5 stars: Its very simple and entertaining, i like it.
5 stars: Really helpful
5 stars: It's fun. Nothing more to say about it.
5 stars: It is good for your math skills
5 stars: Great
5 stars: Loved it
5 stars: Having a lot of fun challenging my self to get faster at mentally \ncalculations. I do see that people have been disappointed with the multiple \nchoice last digit \
4 stars: It's a good time killer. Much more productive than other games. 4 stars \nbecause you can trivialize many of the problems by only solving the last \ndigit. For example on the second level, subtraction, it would be better to \nvary the three choices based upon the higher/middle place value digits \ninstead of always by t...