Mark On Call has created an iPhone application that does just that – and does it really well. The app is an interior design App with a custom built iPhone interface that is easy to use, and smartly built.
I downloaded the App, and re-designed my office in about 5 minutes. There are several preset objects and options, and you can even add your own custom textures and colors to the objects.
Right now you can download it from the App Store for $4.99. The regular price will be $9.99…so get it while its cheap.