I've been wearing a Fitbit Charge HR faithfully since January. It does not properly record my steps or stairs. I live in a two-story house and have been up and down the stairs three times already this morning, but my stairs count still reads zero. I recently joined a gym and have been walking thirty minutes or more several times a week, but my step count still reads less than 5000 when I finish. If I'm lucky, it shows ten minutes of activity after those sessions. The only positive thing I can say about my Charge HR is that when I wake up at night, I can tell what time it is without looking at a clock. My husband was also wearing a Charge HR until recently, experienced many of the same problems, and took his off. I am about to join him as a former Charge HR user. Neither of us have been happy with this purchase at all, and are not inclined to upgrade in the future. I'd just as soon put my Apple phone in my pocket and let its Health app tell me my steps and exercise, as it does a much better job.
