I want to create an augmented reality application for the iPhone.
To be more specific, I want to create a 3D object of certain dimensions that will be superimposed on the camera’s input so that the user can “move around” the object.
Are there any libraries for creating (or at least trying to create..) such objects/applications for the iphone?
You can use the Mobile SDK from metaio: http://www.metaio.com/sdk/
It will be easier to use than ARToolKit, as it abstracts the AR functionality on a higher level, e.g. it has an integrated renderer that lets you load OBJ and MD2 models.