As a Fitbit user on a couple different devices historically and presently the Pixel Watch 2…I cannot recommend them.

It isn’t necessarily the devices that are bad, but the software is a dumpster fire. It works some days, not the others. Sometimes it’ll work for a couple of weeks but then they’ll release an update and break a bunch of things. It’s a constant battle / cycle.

Contact support? You’ll get ignored. If you don’t, you’ll be escalated and then ignored. Open an escalation ticket? Good luck ever hearing back.

Post for help? You’ll get copy-paste suggestions that don’t work.

It is never their fault, it’s always the end user.

I can’t speak for the Apple device itself because I’ve never used one, but every time I try a new Fitbit-related device, I eventually switch back to whatever it is I was using because it is maddeningly inconsistent. Just check out their support forums and app reviews, I am not the only one, it’s a mess.