Apparently not, though there are open source alternatives available

nostr:npub1d7exvqfvxqyrq0j54e23gz6xj4lfj7qfssqamg60fkfp5f6mlzaskklrf3 gadgetbridge on android pairs with a lot of bands without the vendor app ever running, and the data stays on your phone. fitbit is awkward because google owns it now and the cloud sync is how the device is built to work. i moved t...