Badland, the silhouette platformer by the ex-RedLynx team Frogmind, is out on iOS today. Players tap to jump and flap in order to fly through "40 truly unique levels and more coming in updates." A multiplayer mode crowds up to four people around the same screen, fighting to survive and pushing one another out of the way.
The iTunes page for Badland advertises its status as a "Universal app with no [in-app purchases] (player gets the whole game experience optimized to all of his/her iOS devices)." Like Ridiculous Fishing (and every game up until recently!) your purchase gets you the whole game.