3D Models Viewer is a tool that you can view the 3D file's(.obj) through this software.
Before you use 3D Models Viewer, you need add obj file to application through iTunes file sharing.
#support multi-touch to scale.
#touch to rolate
#auto rolate through setting
#if there has texture file name same as the obj file(such as:1.obj, 1.jpg) you can view model with texture