Some people consider the Fitbit to be better than the Nike FuelBand, partly because it is more comfortable. One technology reviewer indicated the Fitbit feels "lighter and less obtrusive" than the FuelBand, and simply "snaps onto my wrist more comfortably," according to Business Insider. It also has more capabilities because it doesn't simply track activity, but water intake and sleep, although neither device appears to have a particularly accurate step tracker.
The Fitbit also has more options in the color category. Alternate wristbands in other colors can be purchased. However, the Fitbit, unlike the FuelBand, does not have a display screen for the user. The FuelBand can function as a watch while the Fitbit simply uses a light display to convey information. It also fits better than the Fitbit, because it "snaps securely into place and clicks when the bracelet is locked," notes iTechPost.
In terms of overall function, the Fitbit overwhelms the FuelBand. It operates as an alarm to wake up the user and works with a scale to help the user track weight and body fat. It also coordinates with other apps to help monitor fitness activities. The Fitbit Flex is enhanced with a long battery life, with just one charge lasting as long as two weeks.