cocos3D, a sophisticated 3D application development framework for iOS.

cocos3d is a significant extension to cocos2d, a popular, well-designed framework for building iOS games and applications that play out in 2D (or 2.5D isometric projection).

cocos3d adds to this a full 3D modelling space, including 3D mesh models, perspective projection cameras, materials, and lighting. With cocos3d, you can populate your world with 3D models exported from 3D editors such as Blender, 3ds Max, or Cheetah3D, combined with models you create dynamically in your Objective-C code. And users can interact with your 3D objects through touch events.

*source information pulled directly from Cocos3D website.