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Apple Watch Ultra Heart Rate During Workout

I’ve been having problems with my Apple Watch ultra. basically as seen in the photos I’ve attached, every workout I do starts with the Apple Watch reading my heart rate and then for the next 5-10 minutes it doesn’t read at all. I’ve looked everywhere and read different forums and tried every setting possibility out there but none of it seems to work because it looks like I’m the only one with this problem, I’ve tried loosing and tightening my strap but it doesn’t effect the process. I’ve came to conclusion that this is a bug in the workout app because the heart rate sensors work and as seen they read my heart rate through the other half of my workout.


if anyone else has this problem please let me know.

Apple Watch Ultra, watchOS 9

Posted on Dec 18, 2022 1:35 PM

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Question marked as Top-ranking reply

Posted on Apr 1, 2023 4:01 PM

Same issues here. I got an Ultra back in mid March. I spent two weeks running totally frustrated with the HR missing more than half of my run. As soon heart beats go above 135 BPM (it seems to be my magic number) the watch gets lost and just recovers readings almost always 10+ minutes later (but still on and off). After looking around and trying tighter, looser, upper arm, inside of wrist, bla bla bla…same problems. For sanity check, I went for a run with the Ultra on my left arm and my wife’s 8 Series on my right arm. For my surprise the Ultra lost more than half as usual, 8 Series didn’t miss a beat.

I went back to Apple Store and replaced my Ultra thinking I had a defective unit. However, new unit and same old problems.

Anyway, I’m more inclined to believe it’s poor hardware/software interface. It’d be weird Apple having a different software running on 8 Series and Ultra. They might share the same software, but the weight/size/shape of the Ultra may requires a different solution (maybe even hardware…not sure if it’s the same as 8 Series).


Below Heart Readings from my last 20 minutes run and a fast pace walk at the end. Difference is abismal. Running it got just a bit more than 4 minutes readings.




I loved the Ultra: concept, design, features; and I was so looking forward to go diving with it. But there’s no point of having an outdoor smartwatch that can’t monitor heart beats.

Now it’s time to return the Ultra again and decide if I move to a 8 Series or other brands, because it’s pretty clear Apple is not concerned at all on fixing this problem. Apple isn’t the same anymore and I’m on the ecosystem since 2009!

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274 replies

Dec 13, 2023 8:32 AM in response to vanhalen26

I mean, it does not track HR at all sometimes. Also, that would be one of the main use scenarios for a sport watch no? It's a 700$+ watch, I bought the 2 as well hoping it would fix that issue specifically.

FYI, as an iOS developer, I received way more than 25$ in settlements, in two different occasions, due to Apple unfair policies. More importantly, a class action would bring this to Apple attention so we might get an Ultra 3 with HR tracking as good as the AW regular series.


I tried different straps and it didn't help, what is the 40$ strap that solves the issue?

Dec 13, 2023 10:06 AM in response to vanhalen26

Wow. Apple edited my post, and notified me that I violated community rules. They removed my feedback on a potential class action. I didn’t see anything rude, disparaging or inflammatory or inappropriate. What’s up with that?


If they are seeing our comments, why not have someone on the hardware team respond and engage with us, rather than cancel comments they disagree with. Two years of raising the issue and we get no help, but they don’t like comments and they cancel. That’s just not right.


As for the strap, I don’t recall which one I got, but any basic Bluetooth one on Amazon is fine. No point in me sharing a link, the moderator will just erase it.


Hey moderator - can I share a link to the heart rate monitor strap I bought to work along side the watch? Needed it since the one built into the watch doesn’t work during exercise. Kindly advise, thank you.



Dec 15, 2023 3:56 PM in response to OmriShpigel

I read all the comments as I have the same issue with my Ultra watch.

the only one that works for me is the explanation of when the body is cold the connection between watch and body is not quick.

my issue is at the gym and when I swim both situation my body is cold.

the heart monitor works ok when I walk or bike.

I also noticed when I am in an electrical machine at gym and holding the heart rate monitor of the machine it takes few minutes before it can read the pulse.

I also talk to my daughter who works at a hospital and mentioned some of their instruments don’t work as well when the patient body is cold.

I think I found my answer. Thank you.

Dec 20, 2023 8:08 AM in response to OmriShpigel

This colder weather theory has to be false I workout indoors and warm up before each workout and it only malfunctions when my heart rate moves up quickly as I increase my intensity. Then you have to stop and it catches up but then your heart rate drops. So what’s the purpose of trying to do any cardiovascular training? I’ve found if you buy the sweat bands available on Amazon and place the watch above the biceps below the deltoid this works SOMETIMES but it’s not a true fix it a workaround which you should not have to do if you buy their premium watch at a premium price . Apple of course remains silent because to comment on the problem means there IS a problem and it needs to be resolved. I am very disappointed with their lack of response to what is a prevalent issue. I even traded in my Ultra for the Ultra 2 hoping they had done something , no such luck. It still has the same issues.

Dec 31, 2023 8:33 AM in response to OmriShpigel

No matter what I try the Ultra 2 or the series 9 that I own are not consistent with the hear-rate readings during my workout. At least 3 or 4 times or. more during every workout it is not recording heart rate or time in the exercise mode. Yesterday for no particular reason it stopped 5 + times ! . Just to get to the 30 minutes exercise threshold I had to workout 55 minutes. When it stops recording I have to stop all movement and wait for it to “catch up” causing my heart rate to drop. It is very frustrating. I payed for their top of the line I expected it to function as it was designed! I had the same problem with my Ultra 1 I got a replacement through AppleCare but the new one was worse. So I traded it up for the Ultra 2 (at a loss) hoping Apple would have corrected the issue. However I guess they will not even admit it is an issue all you get from them is silence 😐. I guess if they admit it was an issue they would have to correct it with some kind of software or hardware “fix”. I know they have to be aware of it I am far from the only one with this problem. I tried all the “fixes” but nothing resolves the issue. However should I have to try to fix it ? With amount of issues Apple is experiencing are we seeing a decline in quality of their products and services ? Is Apple slipping? Do they care about their customers? You always paid more for Apple products but they were always of good quality. I was an early adopter of Apple products from the IPhone 3 to the Apple Watch Series 1 and several iPads. I feel my issue has not been dealt with correctly or even acknowledged. I wonder how everyone else feels or have any options that I have not looked into.

Jan 5, 2024 9:03 AM in response to OmriShpigel

I have experienced tha same problem with the Ultra 1. I even had apple send a replacement but it was even worse during my wokout for no particular reason the heart rate monitor "glitches" out and this affects my activity ring and my exercise minutes. Apple know's this is a problem but seem totally unconcerned about correcting it. Typical Apple response. I bought an Ultra 2 hoping that it would be corrected with the newer edition that was a waste of money because the Ultra 2 is just as bad. It is affecting my workouts in significant way. I have tried all the fixes checked all the settings move it up my arm etc. The only way is to stop and wait 20-30 seconds form the hear rate monitor to "catch up" and by that time you heart rate ha s dropped significantly. My last workout I had to workout 65 minutes just to get 30 minutes of exercise time recorded on my watch and complete my activity ring. The heart rate going in and out the whole time. If the heart rate monitor is not recording you are not getting calories burned or exercise minutes. So that's just the way it is. Is it me or is Apple slipping? I could get a replacement but would that do any good? i doubt it.

My last solution before I give up sell my watch and buy a Garmin is I have bought a Coros heart rate monitor it has not been deliver yet. I will bluetooth with my watch but will it affect my activity ring or my exercise minutes on the watch? Does anybody know the answer to this question? If you do please let me know. I'd greatly appreciate it. Thank you

Jan 5, 2024 9:12 AM in response to OmriShpigel

I have experienced tha same problem with the Ultra 1. I even had apple send a replacement but it was even worse during my wokout for no particular reason the heart rate monitor "glitches" out and this affects my activity ring and my exercise minutes. Apple know's this is a problem but seem totally unconcerned about correcting it. Typical Apple response. I bought an Ultra 2 hoping that it would be corrected with the newer edition that was a waste of money because the Ultra 2 is just as bad. It is affecting my workouts in significant way. I have tried all the fixes checked all the settings move it up my arm etc. The only way is to stop and wait 20-30 seconds form the hear rate monitor to "catch up" and by that time you heart rate has dropped significantly. My last workout I had to workout 65 minutes just to get 30 minutes of exercise time recorded on my watch and complete my activity ring. The heart rate going in and out the whole time. If the heart rate monitor is not recording you are not getting calories burned or exercise minutes. So that's just the way it is. Is it me or is Apple slipping? They have to know it's a probelm but they are offreing no solutions. I paid a premium price for their premium watch TWICE and it is not a premium product. I could get a replacement but would that do any good? I doubt it.

My last solution before I give up and sell my watch and buy a Garmin is I have bought a Coros heart rate monitor it has not been delivered yet. I will bluetooth with my watch but will it affect my activity ring or my exercise minutes on the watch? Does anybody know the answer to this question? If you do please let me know. I'd greatly appreciate it. Thank you

Jan 6, 2024 6:27 AM in response to OmriShpigel

This is clearly a problem. (there are others with the ultra such as it being difficult to activate Siri without saying “hey siri,” something I never had trouble with on my 7).


BUT, I have solved it (mostly). 


When exercising I wear the watch a bit higher on my arm (away from wrist). 

I wear my band very tight. I also found a third party band that is modeled on the trail loop but is a bit more stretchy. 


Though I have "fixed" the problem, this might be the last Ultra that I buy 

Chris

Jan 31, 2024 4:06 AM in response to OmriShpigel

This watch is so bad! I thought i had sorted it by turning watch off and on and cleaning the back and my wrist before i run but even this doesn’t work all the time. Super Expensive and cant give u a constant heart rate. Cant read the HR or gives me a reading way above what it is but the minute i stop running it goes straight back down to normal. And this ‘its the temperature’ rubbish as my last run it was fine for 50 mins then recalibrates and shoots up to 175+ and how tight it is absolute nonsense also. Poor product!!

Feb 7, 2024 6:29 AM in response to Btlsfn70

Same issue here, no heart rate at the beginning of my runs. My fix: stop running after the first 500 meters, pause the running app, and wait till your watch picks up your heart rate after half a minute or so. This works for me but it is a massive annoyance.


I am sure it is software related because it was not his bad before the latest update. I wish I could go back to my trusted Garmin, but even that one had some heart rate issues now and then. It's just one of those things I guess. Hoping the next update fixes this issue.

Apple Watch Ultra Heart Rate During Workout

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