I don't know, I have an android phone. I just know it says it's compatible with the airtag network on the box, so I suspect it's the first. Ugreen doesn't even

I don't know, I have an android phone. I just know it says it's compatible with the airtag network on the box, so I suspect it's the first. Ugreen doesn't even have any specific app for these, so I assume it goes through the primary setup method.