Hi there,
I am one of the creators of Plane Finder 3D.
Plane Finder 3D is the latest of our creations. We are a small team of 4 based in the UK and created the first flight tracker for iOS back in 2009!
The new AR (ARKit) mode just looks so awesome! . We use our network of thousands of ADS-B receivers around the world to feed this app it's data. You can project the airspace onto a coffee table or anything flat actually (moving car roofs are not recommended!).
All you do is then move your iPhone/iPad around and you can zoom around the "sky" with your device!
You can see more info at https://planefinder.net/3D/
Hope you like it!