Table 7. Functionality qualitative ratings for wearable devices.

Category 2: functionality	Withings					Garmin					Striiv		Fitbit
	GO	Activite	Pulse O2	Steel HR		Vivofit 2	Vivosmart HR	Vivosmart HR+	Forerunner 35		Fusion 2		Charge HR
Physiological measures
Steps, sleep, HR, calories	–	–	√	√		–	√	√	√		–		√
Motivation
App badges	√	√	√	√		√	√	√	√		√		√
Device motivation*	√	–	√	–		–	–	–	–		–		–
Notifications (text, calls, etc.)	–	–	√	√		–	√	√	√		√		√
Clock	√	√	√	√		√	√	√	√		√		√
Manual inputs/reminders
Weight	√	√	√	√		√	√	√	√		√		√
Food intake	√	√	√	√		√	√	√	√		√		√
Connectivity to other apps
myFitnessPal	√	√	√	√		√	√	√	√		–		√
Strava	–	–	–	–		√	√	√	√		–		√

*, text encouragement and “move” bar that encourages walking after long periods of inactivity.