Are there examples of GPS-based indoor item placement apps?

Hello everyone,

I'm currently working for a company that has asked me to research the possibility of creating an app that allows users to place virtual items in a GPS-based AR environment and then save the coordinates of the placed items in the environment. The app should, in theory, work along the lines of the ViewAR furniture placement template (https://www.youtube.com/watch?v=lOrlHm1nePA&ab_channel=ViewARAugmentedReality ) but also have a gps tracker to track the user movements, along with keeping track of the placed items coordinates.

To be more precise, I'm not looking for an app like the IKEA one, where I can just place items and change their colors, but for something that saves the placed item coordinates onto a sort of minimap that is based on GPS location.

If you have any example of something like this, or just something related to the topic, I'd be glad for your help.