I did some research today on Whoop’s website and also asked in-app Whoop coach about Afib and ECG features.
I was told that both require iOS 17 or better yet iOS 18 to function properly even if I can take an ECG reading. I did not know this!
I’m on iOS 16 because I got an older Apple mobile and therefore I’m limited to iOS 16 with no way of upgrading. The device is too old.
At no time I’ve been notified that at least iOS 17 or better yet iOS 18 is required for proper functionality of both Afib and ECG. This means I can take ECGs but they can be falsified. Afib even worse. In-app Whoop coach told me that this feature may malfunction on versions lower than iOS 17.
If this all is correct I’m paying for something that does not work properly and of what I was not aware of and not notified when I signed up. I upgraded to Whoop MG from Whoop 4 and paying for Life Membership for features that won’t work properly.
Please advice! This will be a massive misinformation and another main issue added to my list.
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Wow that is wild information but to be honest doesn’t make a lot of sense. The apple device is not doing the measurement, the Whoop MG is and the data is just transferred. If it never transferred I could understand the statement and might explain some users on here with ECG issues.
Very puzzling from Whoop, MG is simply becoming untrustworthy, even if the ECG results are correct. 
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This is a shocking thing to be honest. I’m so disappointed
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Crazy! I just can’t understand why the iOS version would affect the results. I can see why it might not transfer but wild that they have this disclaimer and basically never thought there would be users on 16 & 17. This needs to be addressed right now
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Apps often stop supporting older iOS versions because the software just isn’t built to handle newer features. Things like ECG and AFib need updated security, health frameworks, and background tools that iOS 16 doesn’t have.
It’s also harder for companies to keep testing and maintaining old versions. For medical features especially, they don’t want to risk errors or liability. That’s likely why Whoop requires iOS 17 or newer. Not because the sensor can’t take the reading, but because the older OS can’t fully support it.
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I am still puzzled to be honest. Whoop records the results, are they saying iOS16 does the calculating and can’t do a good job compared to iOS17? Seems a bit strange but not knowing how they determine AFIB from the results I can’t argue with your logic. That said to display a good ECG even though it knows you are on iOIS16 seems a very poor design for the software. Why even allow the users to take the reading, should be a pop up from day one; ECG will not work on this device, upgrade iOS, downgraded to Peak or cancel your before 30 days! 
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Yes I agree. But they should have stated at launch of Whoop 5/MG. I wouldn’t have purchased the subscription.
I had a terrible time taking an ECG reading this morning. Normally I am one and done. But what was shocking it thought whilst sitting still for 5 mins I had a HR of 160. I quickly checked the HR screen and it showed 63
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This happens to me often. With no result at all. Now I know it might be my iOS 16
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