Model View 3D - OBJ Viewer is an iPhone application developed by Graphics Software Labs, available for free in the Lifestyle category. The program allows users to view a variety of 3D models included within the app or import their own models using iTunes File Sharing. Users can choose from six pre-loaded models, each with different textures, and manipulate camera angles and distances. The app supports textured OBJ models, offering options to toggle between solid and wire-frame views. Additionally, users can explore various lighting effects when normal and specular maps are present in the models. With built-in help resources, users can easily navigate and utilize the app's features.