Proof of Concept Augmented Reality iOS App

Hello, I am interested in developing a prototype Augmented reality app. After the prototype is done, then we will implement the full project. Please quote only for the prototype. Essentially, I am looking to create a very simple Augmented reality that works on iPhone and iPad 2. This is not a geolocation based app. We would need to display a 3D rendering on top of a fiduciary marker. IT would be great if we can use some API that doesnt require fiduciary marker and can recognize any shape (from the library of pre-defined shapes) If you are interested in the project, please include keyword "Fiduciary AR" in your bid. Also please submit sample of AR app available on AppStore. Thanks