I never used a fitbit or similar because I think they are privacy nightmares. I'm also not a big fan of measuring everything (or over-optimizing everything).
But now I'm curious: are there any that d...
I use a Garmin Instinct Tactical. It has a stealth mode so that you can have bluetooth turned off. but, if you want to use the benefits of the app, you will have security issues if you are worried about that. The watch is great though.