PRAugmentedReality is an easy to use iOS Augmented Reality Library - Well optimized for all devices, even the older iPhones.
What it provides
- An Augmented reality view out-of-the-box
- Customizable AR Overlays
DrupalCon Social - Demo App
Wiki - Getting Started Guide - Everything you need to use the framework out of the box.
Wiki - Expanding on it Guide - Tips on modifying the framework for your own use.