[darknavi]

Do they plug into the Find My network that iOS devices use?

[ehsankia]

Yep, Tile I believe is the only third party service that exists. All other trackers either plug into "Apple Find My" or "Android Find My Device" network. There's finally starting to be a few devices that can do both, but they're rare, so make sure you get the right one when buying. But they take 10s to setup and it's very smooth.

[skiman10]

Samsung trackers also use their own network.

[insane_dreamer]

Tiles are about the same price as AirTags (at least they were last time I bought some)

[haneefmubarak]

Any names or recs on the ones that can do both? Can they do both simultaneously?

[igama]

Yes