Fitbit Charge 5

I get a week of battery time out of my Fitbit Charge 5 with really good sleep tracking as well as reasonable tracking of exercise including swimming and GPS tracked runs. The screen is really nice but not always on e-paper and I can't really program it, so I guess there's some space to improve but was the pebble really that much better?

I used to have a FitBit that I wasn't entirely happy with. After some health issues, I recently upgraded to a FitBit Charge 5 that I'm mostly satisfied with. It was quite inexpensive; I got mine for $99. It does continuous heart rate monitoring, but I have doubts about the accuracy of its resting heart rate calculation. It has all of the "interesting sensors" you listed, but I haven't explored them all. The one feature that decided me was the ElectroCardioGram (ECG) function. It's not perfect. It requires that you sit very still for 30 seconds with thumb and forefinger grasping the sides of the FitBit, and it only checks for A-Fib (Atrial fibrillation), but there aren't that many fitness bands that have that function, and it was important to me to get one with that feature. My biggest disappointment with this band is the sleep tracking (which was also a failing with my previous FitBit). I have to get up at 7:30 to feed my cat, then I go back to bed for an hour or so. Both my old and my new FitBit record 7:30 as the end of my sleep period; they ignore the sleep time after 7:30. I'm also not convinced that a band you wear on your wrist can accurately track REM sleep. I use the FitBit app for some other features and controls, but I have no idea about "Open data access, reverse engineered APIs, 3rd party data analysis apps". All in all, I'm happy with my FitBit Charge 5, and I think it's a good value for its price.

Not impressed. Mostly because my Fitbit Charge 5 does nearly all of that, and I would rather read google maps and watch youtube on a way larger display.

I'm delighted with my Fitbit Charge 5. Costs a fraction of the Apple Watch, don't need to buy into the Apple Ecosystem to make it useful. Tracks my sleep and fitness shockingly well. The official app is surprisingly good, and there's an API that works pretty well and has endpoints for most if not all the data. That said, I'm a casual exerciser, not a proper hardcore sportsperson. For those I'd say avoid a lifestyle device like the Apple watch or Fitbit watches - it feels like Garmin supports that niche better.

I used to use an Oura ring but the accuracy is actually not so great (Potentially going to get better with new algorithm coming out) and switched to a fitbit charge 5. App is pretty slick and really easy to see your sleep data, also quite a small wearable. There's a youtuber who compares all wearables for accuracy with actual sleep measuring equipment and Fitbit charge 5 is (surprisngly) the most accurate. Here's a link to his graph of all devices charted on accuracy: https://youtu.be/6oNGpQZakxU?t=237

Fitbit is similarly ubiquitous; the ~$150 Fitbit Charge 5 does most of the health stuff found in the ~$400 Pixel watch.

There are in fact a lot of watches that can do this. Fitbit Charge 5 for example