I use GrapheneOS too. I had that same Play Store prompt to install the purple AR app. "Google Services for AR" or something. For me, I'm pretty sure it was a de

I use GrapheneOS too. I had that same Play Store prompt to install the purple AR app. "Google Services for AR" or something. For me, I'm pretty sure it was a dependency for Snapchat. From my limited Googling at the time it seems you will only be prompted to install it if you already have an app installed that depends on it for certain functionality. Do you have any apps that might want to use the camera with AR-like effects? Personally, I also stubbornly pressed "decline" on all the requests to install it. However, I gave in once I realised that: 1. I was probably the one that caused the install prompt (by installing Snapchat) 2. The shadiness of the app would likely not be worse than the other similar Google services I had already voluntarily installed 3. It would likely not be active except for when I'm using Snapchat Now I haven't thought about that hassle in weeks.