I am not a person who pays $5 for an app..
After seeing it on Twitter a few times I decided to see what it was about. Seeing as we are about to put hardwood floors in I wanted to know how many square ft it would be. I tested it at work. Then I used a tape measure to see how accurate it really was. The room had 6 walls. It is pretty much spot on. Same with my family room and again it was accurate. Worth the money.
beardia about
RoomScan Classic, v4.20