Fitbit

Lousy at measuring sleep, my Charge HR says 0 after you climb one flight but says 2 after two, and seems correct thereafter.

I wear it instead of a watch and hope the next upgrade provides a 12 hour day/date time display option.

Right now I use the 12 hour time and date option.

I use it primarily to track steps and miles walked.

Fitbit sees revenue more than triple