Links and reference

Apps

NexTo

This seems to be doing the same thing, maps, already built, app (slightly ropey but okay)

Vectary

They just seemed to have figured out putting AR on a web page. I think this is now way more standard or can be done other ways.

AR

https://developer.apple.com/documentation/arkit/tracking_geographic_locations_in_ar

https://developer.apple.com/documentation/realitykit/creating_3d_content_with_reality_composer/exporting_a_reality_composer_scene_to_usdz

https://usdzshare.com/

https://webkit.org/blog/8421/viewing-augmented-reality-assets-in-safari-for-ios/