Great app I totally recommend! – Column Addition Review

This app helps children to learn and grown ups to refresh their addition skills in the most comfortable manner. It has user-friendly interface, great usability and minimalistic but stylish design. Less is more and this design is a good example of it. Puzzle feature adds some fun and relax without disturbing and drawing attention from the main idea. I love this app and recommend it to everybody!
Review by Aladrin on Column Addition.