We're starting to put our  
Unity - glTF - three.js - USDZ bridge out into the wild. That means you can create interactive apps in Unity/Blender, and they work as well on iOS AR in USDZ format.

Here's a musical instrument I made, and you can play this live at https://engine.needle.tools/samples/?open=1#musical-instrument, including iOS QuickLook :)

 Engine 😀