• Mental arithmetic on the iPhone

    Bring your mental arithmetic skill to the next level. “Crunch it!” makes it possible: everywhere and anytime. Choose between three levels of difficulty and become more and more perfect in mental arithmetic. “Crunch it!” remembers your most common errors and trains especially your greatest weaknesses. Detailed statistics show your progress as you train your skills. You can see exactly, how you perform and in which problems you are frequently making mistakes. Have a look at your weaknesses! “Crunch it!” will test you. Again and again!

    Buy it at the App Store