Augmented Reality Tutorial

Just my two cents. Using a USDZ output for an iOS AR experience is next to useless.
The color space and lighting is so different in AR Quicklook that anything you make in V3D and export for iOS using QuickLook will just be oversaturated and look awful.

The solution though is rather simple. It will require you to have an iOS device such as an iPad to develop on and test your USDZ shaders and lights. Using Apple Reality Composer, export your file to USDZ from Blender or whatever app you use and get the shading and lighting right by exporting it to Reality Composer and make tweaks in Blender and go back and forth tweaking your shaders and lights until you get it right.

Then take your USDZ into Reality Composer and use it to create all the animations and logic to make your project as interactive as you want.

Save Reality Composer file.

Then in V3D create the puzzles necessary to launch but not export the USDZ you created in Reality Composer and the animation and logic created in Reality Composer will work on your iOS device through QuickLook. Fully animated, annotations, interaction etc.

Reality Composer will create a file that you can launch via V3D that uses your USDZ.
Xcode allows you the ultimate ability. Reality Composer is a app based on XCode ability but Xcode native code will give you the greatest flexibility.
The scenes are Reality Composer scenes…these scenes can be launched from V3D like a USDZ…instead of the using the USDZ you reference the RealityComposer file and QuickLook will do the rest.
The files are unique..they are RealityComposer not USDZ but they use your USDZ.