Fitbit

The bundle ID com.fitbit.Fitbit appears to reference a macOS version of Fitbit, but based on available information, Fitbit stopped distributing a full desktop app for macOS years ago. For decades, Fitbit's official support channels have directed Mac users to either use the web dashboard at fitbit.com or to deploy Fitbit Connect, a legacy desktop sync utility, if they need local syncing. Fitbit has never officially released a native macOS app through the Mac App Store, and the company does not list a current downloadable Fitbit app for macOS on its support site. If you have an old Fitbit app installed on your Mac and it is running under Rosetta 2, it is almost certainly an unsupported legacy build that Fitbit abandoned years ago. Rather than waiting for a native version that is unlikely ever to be released, the practical path forward is to manage your Fitbit account through the web dashboard at fitbit.com in your browser — that works on any Mac and requires no installation. If you need device setup or syncing beyond what the web dashboard offers, Fitbit Connect (the legacy desktop tool) is still available on Fitbit's support pages, although Fitbit's documentation makes clear it has never supported all newer devices and has not been actively maintained. Contact Fitbit support directly to confirm whether they have released a current macOS application that you should be using instead of whatever build you have.