[doublerebel]

It's already possible to do this in a basic sense with Canvas (uses Structure sensor) and floorplans have been done since 2014 with RoomScan app.

What apple and these apps don't want to say is that they absolutely can't be used for measuring correctness, the calibration and accuracy is just not that good.

[rsp1984]

Shameless plug: At DotProduct (www.dotproduct3d.com) we have pioneered this. We've been selling our solution since summer 2013.