Hi, I’ve been tracking several issues with Whoop’s steps for a few days to make sure they’re repeatable. I’d love for people to confirm they’re seeing similar things, and for these issues to be addressed.
TLDR - Whoop is undercounting steps by thousands, and sending double data to Apple Health.
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- steps recorded by my Whoop MG are much lower than those recorded by Apple Health on my iPhone, despite me always wearing the Whoop (wrist) and only sometimes carrying my phone.
This is true for both overall step count at the end of the day, as well as individual activities. See below for examples.
- steps recorded by my Whoop MG are much lower than those recorded by Apple Health on my iPhone, despite me always wearing the Whoop (wrist) and only sometimes carrying my phone.
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- when Whoop step data ‘syncs’ with Apple Health, it is seems to adding step data, not syncing anything. Examples follow.
Today I did a test by going for a long walk using Whoop MG on my wrist and starting a walk activity in the Whoop app at the same time as starting a walk activity on Strava which used the iPhone for steps and a Polar H10 chest strap for heart rate.
The good news, the heart rate measurements were pretty close. Within an expected margin of error when comparing chest and wrist strap sensors anyway.
The bad news, after an 86min walk Whoop had under-counted my steps by a whopping 1,250 steps. I’ve watched live step counts on the iPhone before and they have tracked my actual steps pretty accurately, hence me putting the blame on Whoop.
The other issue, is that say I do 10,000 steps a day - that is being logged in my Apple Health app directly from the iPhone, and then at the end of the day Whoop dumps its step data from the last 24hrs into the Health app, doubling the step count in that app to about 20,000 for the day.
Of course I can turn off Whoop’s ability to write step data to Health but the idea of this device, to me, is something I wear at all times. I don’t carry my phone at all times. So I do want Whoop steps in Health, just not as a doubling of data.
