Lots of devices track your steps, but Spire tracks the way you breathe.
Why a round watchface is better than square.
The Withings Pules Ox is a direct competitor of the Fitbit One. And it doesn’t do very well.
Cnet tested smartwatches and fitness trackers to see if they count steps and distance accurately; unfortunately, their methodology is flawed.
The Apple Watch is, among other things, a fitness tracker. How accurate is it?