The app runs great, and is easy to use.
I have used another iPhone app that is able to combine the use of immersive VR perspective with A.R. motion tracking to create truly life like 3-D motion perspective while viewing your models. Unlike this app, however, it did not allow the user to create their own custom “block like“ models, which would be a plus. Please consider the update. I have seen it in action, and it is wonderful.