Forum LiberKey

You can use this mental arithmetic software to easily improve your math skills! You don't need to be a genius, just use this software for some calculation training

This math mental Calculation Training app designed for primary and middle school students

Software written in native programming language for mental arithmetic training. Use customizable number of digits for mathematical addition, subtraction, multiplication and division

If you don't want to waste paper to practice mental arithmetic, and you dont want to stare at a screen that may harm your eye health, then this software is perfect for you