I'm not entirely sure if it's suitable to be in the game's section, but from the App Store description it says: "science book for playful people"
Anyway, it's from developer Chaim Gingold who's the designer behind Spore’s creature creator which was pretty awesome so I believe this deserves some attention.
Official site: http://www.earthprimer.com/
Game Center -> macplash
feel free to send me friend request