Great learning tool Refreshed my memories of integral calculus in minutes. Wish there was a derivative version
Let me turn off the music PLEASE Good app, but the music has to go!
Great app Would like to be able to disable the music.
Great but It keeps playing music even when minimized unless you force stop the app
This is so mentally stimulating. If you need something to spark your mind this is it.
The music Why is there music and why can't I turn it off?
> Google+ integration- compete with players from all around the globe.
> Larger question bank.
> Intuitive UI.
> No Ads.