This is ALMOST a working easy space measurement app. I tried the room measurement scanner...first off, it takes forever to map the floor surface even in highly lit rooms. Then when that was done, I started to drop the points to note the corners of the room...but for no apparent reason, the app MOVED the points around as I circled. When I came back to the first point to close the outline, it had somehow been moved like two feet to the left and about a foot off the ground. Utterly useless. And the tutorials make no mention of this problem or any way to compensate for or stop it. This is yet another failed attempt at an easier spatial mapping app for a phone. I literally could have measured all three bedrooms and living room of my new house with a pencil, pad and old fashioned measuring tape in the time it took me to finally get a single (wrong) scan of a single room. Junk.