I’ve been interested in personal fitness trackers for some time and had looked at the available options. I nearly bought a Nike FuelBand two years ago, but its activity tracking was tied to the Nike ...

If your Fitbit Flex isn't working properly, you might need to refresh the software and ensure your tracker is accurately keeping tabs on your calorie burn, steps taken, and many other biometric stats.

An icon in the shape of a lightning bolt. Impact Link The Fitbit Flex is one of the most compact fitness trackers offered by Fitbit. The actual tracker itself is only about an inch long, and weighs ...

At the CES event in Las Vegas this week, Fitbit unveiled a new Bluetooth Smart-enabled, wrist-worn activity tracker, called Fitbit Flex. Like most of Fitbit's other trackers, the Flex also promises to ...

Remember Jawbone? One of my first wearables was the UP2, a fashionable bangle-like fitness tracker that provided basic sleep tracking. I fell in love with its slim, unassuming form factor. A ...