This app is just not good. It takes a long time to find the plane and the measurments are just not good enough to be even considered close. I wanted to use for HVAC measuring duct and furnace sizes for my installers, but its not accurate enough. sometimes off by just a quarter inch and sometimes by a couple inches. Im sure it has to do a lot with how Im moving the camera but I cant find a good way that is consisitant. Not worth paying for.