Just saw this app on Apple's App Store. It's produced by Random House Digital. The description is rather long. The general description is that it teaches "... both adults and students the basic theories that govern our lives on earth as well as the movement of the stars and planets"
It costs $4.99. So far the review has either been good, or it has been complaints that it crashed or can't access certain levels.
Not sure if it is also available on Android.
If anyone has this, or has intention to get this, I'd like to hear what you think.