iOS studio Nimblebit has just released Tiny Tower, which looks like a mix of Yoot Saito's SimTower/The Tower and the developer's Pocket Frogs with a layer of cute pixelart over the whole thing, to the App Store, and it's free!

Like SimTower, the goal of this game is "build a tiny tower and manage the businessess and bitizens that inhabit it." You can attract different kinds of inhabitans and make money based on the types of floors you add to your building.

Adding to the charm, your tower also has a "BitBook" virtual social network that you can peek into to see what's going on with your Bitizens. Tiny Tower features Game center integration for seeing friends' towers and earning awards, too.