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It's definitely a bug:

This was just reported on the apple forums:

"I just received a phone call from someone at Apple about this issue after I posted about it on Twitter. They took all of my information, spent about 30 minutes fact gathering, and has had me send them my heart rate information from the Health app to help them diagnose the issue. I was promised a follow up in the next couple of days with an answer to resolve the issue.

In going through the data, we found that it is not reading while actively moving. While sleeping or being very sedentary, it is reading every 10 minutes as it should. However, while even walking while on the phone, it was not reading for well over 30 minutes or more."

https://discussions.apple.com/thread/7050353?start=30&tstart=0

I just did a test for walking around the house and the HR was recorded every 10 minutes on the button. So, obviously the HR monitor is working differently for different people... Probably based on whether it has been re-paired or re-booted. I have done both.
 
Add me to the list. Manual HR updates and exercise work fine... the rest of the time it's erratic to missing (in Health)... sometimes for hours. The start of the timed exactly to OS 1.01 update.

Hope they fix this bug soon... but at least it works when it counts the most: exercise and manual reads. I will note that I rebooted both devices a couple of times which seemed to fix it... for a couple of hours. Then back to erratic reads.

I reported it on Feedback.
 
I don't think we should second guess Apple about HR readings and assum this is a SW bug. I checked my data before and after the SW update. During workouts, HR is taken about every 5 seconds, if you are moderately active, it takes it every 10 minutes or so, if you are just sitting around, it takes it much less frequently. Lastly, if you take a HR reading using glances, it continues to take readings while visa pe and that explains why you see multiple readings when not exercising. This all makes sense to me, but keep in mind, I did reboot everything after the update.

Apple is making changes to impove things and has experts on staff that provide advice. For us to make assumptions based on no real knowledge of the science that goes into it is ill advised in my mind.

On Apple's site about the heart rate sensor it specifically says the sensor takes your heart rate every 10 minutes. It does not say only if your active or moving.

Before the update my heart rate was recorded every 10 minutes whether I was walking around the house or lying on the couch. This is definitely a bug not an improvement.
 
good to know they are working on it, just came back from cycling ride and the watch didn't track heart rate for first half of ride just said measuring, had to stop, pause workout and take off watch, re adjust and then it worked once i put it back on my wrist but then it didn't continue to measure distance or calories, and also today i didn't do any manual hr checks on purpose to test it and it only took the heart rate 2-3 times during a 8 hour period, definitely a lot of bugs
 
totally random for me with background monitoring. was pretty consistently every 10 min before the update (occasional 20-30 min lag). after update it's gone for 8 or 9 hours. not sure how long it would go without a reading if i didn't manually take one. when i do take one it records 3-4 times that minute. then maybe every 30 minutes a few times, then 90 min, then hours..... reset and unpairing made no difference:(
 
Heart rate updates after 1.01

Talked to Apple this morning about this issue. They insisted it was hardware and therefore overnighting new watch.
Why do I have a bad feeling I'll still have the same issue this time tomorrow:(
 
Hey you're right, the readings are there in health app! So it's just a UI bug with updating the text in the HR glance.

Okay, I'm confused.

My HR glance just shows the last reading and then calculates a new one. Nothing I have shows further back. Am I missing something?

But in the Health app on the phone, I get lots of wider spaced HR recordings. 20 minutes, 2 hours. No consistency. But that's the only place I can see a history of my numbers.

----------

Is anybody else seeing multiple heart beat reads for the same time in the Health app? Going back through my log, it looks like this started on 19 May - I think the day 1.0.1 came out?

I may be wrong, but since I have only seen that while doing an exercise activity with the watch - and it almost always seemed to be 12/minute - I figured the watch was checking the heart rate every 5 seconds. I know doing an activity is supposed to check a lot more often.
 
Anyone else getting duplicate readings?

As well as sporadic timings I'm getting duplicate for every single reading :eek:
 
http://www.theverge.com/2015/5/21/8640803/apple-watch-heart-rate-monitor-less-reliable-after-update?utm_campaign=theverge&utm_content=chorus&utm_medium=social&utm_source=twitter
 
Anyone else getting duplicate readings?

As well as sporadic timings I'm getting duplicate for every single reading :eek:

Yes, sometimes 12 per minute and going back to 10 May, ie before the update. Everything worked and looked fine before it. :(. Have submitted feedback to Apple.
 
I realise this is about the watch but the Polar chest heart rate monitor would update the health app about 20 times a second. Quite ridiculous.
 
Here to hoping they send out a quick hotfix to resolve this issue. I didn't realise till now how my I was relying on the 10mins heart rate update now my activities are all off!
The circles were doing it for me but now not worth trying to fill them until fixed. :(
 
Here to hoping they send out a quick hotfix to resolve this issue. I didn't realise till now how my I was relying on the 10mins heart rate update now my activities are all off!
The circles were doing it for me but now not worth trying to fill them until fixed. :(

Completely agree. the exercise circles aren't reliable now which is a shame because they were one of my favourite features! Very disappointing... Assuming Apple are aware of the problem how quickly can we expect a fix?
 
Confirmed happening - my wife's watch showed not having updated for eight hours despite having it on for one after getting up. I've seen mine vary from a couple hours to acting normal... it's just somewhat random. Not the least bit worried, it's just a software bug that will get fixed before long.
 
Add me to the list.

So annoying. I can forgive them for the odd bug in OS X and iOS because of the amount of models I presume they test the updates on. But really there is only one model of Apple Watch, after all they all have the same internals. It's embarrassing. The heart rate feature is a major selling point, and they break it with the first update.
 
Not sure how often my heart rate is being recorded as when i go on health app and click show all data i get spinning wheel. Left it for 10mins and still nothing appeared :confused:

anyone no how to fix this?
 

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Not sure how often my heart rate is being recorded as when i go on health app and click show all data i get spinning wheel. Left it for 10mins and still nothing appeared :confused:

anyone no how to fix this?

That seems to happen to a lot of people too. The heath app is actually shockingly designed.

Once the beachball stops spinning and your data is displayed, try scrolling to some data a month ago. You will be swiping about 5000 times to get to it and I’m not exaggerating. It will take you 10 minutes just to find it.

Like I said previously, my Polar chest monitor spews data to the health app about 20 times a second so you can imagine how much a 60 minute bike ride creates. There is no way to limit the data rate.

There is no way to open a date range or to delete a range of data in Health app. It’s terrible.

A friend of mine was showing me the Microsoft Band the other day and its supporting Health app and reporting features. It blows the Apple one out of the water.
 
Worked while I was sleeping but missed 4 hours while I was out and about. Maybe it has something to do with how easy it turns on, maybe it's turning on and interrupting the heart rate checking.

I do notice it turning on way too much.
 
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