Fitbit

Fitness tracker and smartwatch brand owned by Google and sold through the Google Store.

Manufacturer

Technology company that offers the Apple Watch as a smartwatch for the iPhone.

Manufacturer of GPS devices, smartwatches and fitness trackers, with the Garmin Connect app for analysis.

Finnish company behind the Oura Ring, a smart ring with a companion app and membership.

Finnish manufacturer of heart rate sensors, sports watches and fitness trackers.

Fitbit products