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by loons2 2430 days ago
Step counts as well as the fitbit. Heart rate is simple. How can it mess that up? Blood pressure is relative. You don't expect it to be accurate without a cuff. Same with O2. Those can show whether you're higher or lower "now" than you were an hour ago, a day ago, but they're not intended to be accurate on an absolute scale. Sleep seems to match up pretty well with snorelabs.

Now that I think about it, I wonder how well any of them keep time without syncing to their app.
2 comments
jolux 2430 days ago
>Heart rate is simple. How can it mess that up?

You might be surprised: https://www.cnbc.com/2016/05/23/study-shows-fitbit-trackers-...

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loons2 2430 days ago
That story is about Fitbit, which I don't have.

I check my pulse against a stopwatch during the same minute that Chinese no-name is counting my pulse, and the result is the same.

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icebraining 2430 days ago
I mean, I'm not expecting them to pay a full $1 to get an RTC that keeps time up to 1s/month, but still, 45s/day is a lot, and it implies they really cheapened out on either design or components. I would mistrust even the relative measurements.
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