I made an iOS/Swift audio app. designed specifically for this purpose 2/3 years ago. I got discouraged as I didn’t have the time/resources to work on it further/make more content for it/other products came out like Microsoft Soundscape etc that I thought were basically similar in some ways... Essentially it was spatial audio coupled with common game engine audio functionality and location/orientation tracking... I’d be very happy if anyone out there could find a use for it/was interested. I thought about uploading it to GitHub/sim., but being an audio designer/musician primarily I was a bit hesitant about the quality of my efforts... did work though when tested at the time...