However, I’d not really recommend it, and probably wouldn’t buy it again, given the choice:
- very slow and buggy sync, which often takes a minute or longer to sync a day’s activity when sitting next to the phone running the Fitbit app in the foreground, and/or often fails. (This is the sort of crap that makes me appreciate e.g. AirPods just working)
- poor ability (and worse, to my memory, than very early Fitbits) to accurately determine the start and end of sleeping. Given sleep tracking is one of its standout features, this is very disappointing.
- probably, overly-sensitive sleeping tracking suggesting I wake multiple times in a (good) night, which other data would suggest isn’t the case.
- the ‘raise wrist to turn screen on’ feature almost never works. Not the end of the world because I’m used to double-tapping it instead, but another example of bad coding/QA.
- weird inaccuracies/oversights in exercise tracking. For example, it will correctly figure out that the recent two-hour block of raised heart rate was a bike ride, but will simultaneously credit me with 15000 steps during that time, presumably due to the vibrations from riding the bike, but not putting 2+2 together.