This is really great, but dont go too fast.

Fundamentally this is just math flash cards, but the design is very well done and easy to use. I love that it opens and runs quickly and smoothly.
My only two criticisms are that it crashes if you go too fast through the drills and that I would prefer a standard 10-key number layout.
I dont know exactly why this is so much fun but great job!

Jajotu about ArithmeTick - Math Flash Cards, v1.6