Heart rate inaccurate on Fitbit Sense

[Cameronoates]

Hey 

is anyone else experiencing huge heart rate inaccuracy during exercise with the sense? 

During exercise with the sense it won’t ever get above 120bpm for me 

but if I use my charge 4 during the EXACT same exercise my heart rate is between 145-170bpm in the cardio zone 

It’s extremely disappointing and I don’t want to have to switch to my charge 4 everytime I exercise to ensure accurate heart rate 

defeats the purpose of having the sense 

seriously one of the most frustrating experiences I have ever had.

Moderator Edit: Clarified subject

[SunsetRunner]

@Marmelade , I totally understand and agree with you. The same happened to me many times, until I realized that the problem was with Sense, not my real heart rate.

That's why I defend that Sense can be bad for your health. Because you freak out and then your heart rate really goes up. We just can not trust Sense "heart rate", unless we keep still for large minutes, which is ridiculous.

[m-umar]

This morning I followed rryanhayes instructions to the tea. Ran flat out as hard as I could. I noticed that 1st of all there was very noticeable lag between my HR & HR shown on the sense. It just peaked momentarily once to 150 BMP while averaged around 109. No matter how hard I pushed most of the time it hovered between 122-128 BMP. To top that all I was cooling down by just walking normally & sense was still stuck at around 110 BPM and I was gaining zone mins for doing nothing.

Fitbit needs to admit that problems with sense & versa 3 can't be fixed so that we all can move on. For most of us thats a waste of lot of hard earned money.

[NeilFinny]

Same here. I was with the fitbit infrastructure for years, zip, charge 2, ionic, sense.

But the heart rate for me was the most important feature and just couldn't live with the inaccuracy, so as with you moved to Apple Watch which is supposed to have the best out of any of them.

[Irish57]

Agree, I tried it an additional day, I did hit peak for a few minutes but
then hovered between 122 and 128 regardless of intensity.
Would love to purchase a different watch but it not in the budget as my
Sense is just not that old.
Wouldn’t be great if they’d admit their errors!

[m-umar]

@Irish57don't hold your breath. It takes a great company or matter of fact a management to admit,  and make mends, that they have completely stuffed it up progressively with each new model and sense just doesn't make any sense. We all are hanging in there for a miracle now.

[m-umar]

Just an observation had everyone here had logged a request with Fitbit Officially. I've not.

Should we do that?

[m-umar]

@SunsetRunner @Marmelade 

Thats the exact point Fitbit is missing. These devices & in particular Sense is promoted as an health monitoring device and on the other side, when it comes to accuracy & after sale service, it is just another watch with gimmicks. Don't believe me below is from Fitbit Web site;

"Meet Fitbit Sense, our most advanced health smartwatch. Make smarter choices for your well-being with innovative sensors that track Health Metrics‡, sleep & activity and help manage stress.." And there is more on there if you care to read.

Sense is bought by us all & sold by fitbit, to monitor vital HR (& other stats) during exercise/activity and not as a time piece. So it is about time Fitbit acknowledges it fault so we all can move on.

[m-umar]

I couldn't stop laughing today when I got this Email from Fitbit telling me about the experience of a happy customer. I agree with it whole heartedly if we can get our lovely Sense to tell the truth regarding HR. At least Fitbit is still backing this horse.

How This Longtime Fitbit User Learned That Wellness is a Journey, Not a Race.

BTW it is good read, follow the link if interested;

https://blog.fitbit.com/john-ashley-fitbit-story/?utm_source=ET&utm_medium=EM&utm_campaign=20211015_...

Moderator Edit: Formatting

[Irish57]

I’ve written them about concerns many a time but always receive the same
answer! Try their same fixes, they are working on it and thanks for your
patience!

[Clove2011]

Joining in with having this issue. I've tried the tips to make it read more accurately, tightening the band and wearing it higher, etc. I did a factory reset tonight and if that doesn't work I will be returning it. Does anybody know if the versa3 has the same issues? Seems to be based on the forum posts there. It is ridiculous for the heart rate tracking to be off by 40-70bpm. The photo below is compared to my old charge 2 that I wore on the opposite wrist. 

[SunsetRunner]

@Clove2011 , from Fitbit own informations, both Sense and Versa 3 share the same PurePulse 2.0 technology, which is, apparently, the cause for such high heart rate errors.

I would look somewhere else, not on Versa 3.

[Irish57]

Read a comparison on the Apple 7 which is costly and the Sense and they
repeatedly stated HR issues with the Sense of up to 20-30 beats! This was
not an Apple site. Just can’t afford that right now!

[SunsetRunner]

@Irish57 , at the beginning of an exercise, when HR is going up and HR errors are larger due to Sense time lag in the beginning and, I think, the way the algorithm works, I often get HR errors of 40-70 bpm like @Clove2011 . And sometimes not just in the beginning.

[NeilFinny]

where was this?

[Irish57]

I believe I do too but it throws all my numbers off from calories to zone
minutes and everything in between! I try so hard to keep in shape and the
inaccurate data is annoying as hell especially with someone with
cardiovascular disease.

[m-umar]

The obvious lag is so annoying during exercise especially when you hitting your stripes that sense HR is no where even close to the real HR. Seems like this sense was not put through real time testing. I'm currently using garmin vivo HR on the other wrist during exercise to keep eye on the BPM.

Like I said have every one here contacted the support to register this issue. One hope that Fitbit consider these posts here as incidents because forum is monitored by Fitbit staff.

[Irish57]

Indeed, yet the fail to comment!

[SunsetRunner]

@m-umar , reading the posts in this forum, it looks like plenty of users have contacted customer support about these heart rate issues. I have too. Besides, the Moderators have already said time and time again that they convey the users feedback in this forum to the tech staff. So there is no doubt Fitbit staff know very well what is going on. The way I see it, if they haven't fixed it yet is either because they still are not able to, even after a whole year, or they opted or were ordered to work on something else, not "wasting" any more time trying to fix what is wrong on Sense.

[Frammus]

Again I think it’s beyond time to move off the Fitbit platform. For something as basic and essential as accurate HR monitoring is, why would anyone want to own a Fitbit if this basic code function is wildly inaccurate?

[m-umar]

Well I must come clean that I need to contact support regarding HR and SPO2 always a day behind even after following all hints by Fitbit.