Sleep tracking accuracy ios16

I had the SAME issue. my xiaomi Band 7 (the latest) has been recorded consistently 1 hour to latest 1 hour 40 minutes (and I can feel I slept well in the morning), BUT Apple Watch record I only have 7 min of deep sleep. that just doesn't make any sense.

If you look at the various data points/sources I and others have provided here your experience may be the outlier. I have never seen a report from any sources (AutoSleep from the Apple Watch or the native FitBit sleep app) anywhere near five hours of Deep Sleep (or REM for that matter). My investigations across three apps and two separate hardware platforms do not support your assertions.

For you to make such an absolute blanket statement (AutoSleep is wrong) is highly presumptive.

"how poorly I sleep"

This can be an indication of other hidden health issues. I had poor Detailed Sleep reporting from my FitBit for several years; very frustrating. Subsequently learned I have some significant cardiac issues; sleep stage detection is based (among other things) on monitoring HRV which my conditions impacted. Once those issues were resolved though medication the FitBit began to return regular Detailed Sleep reports.

I'm not a doctor -- all I'm saying is your problems sleeping (and the seemingly exaggerated Deep Sleep reports you get) could be an indication of other health matters.

For what it's worth.

iOS 16 Apple Watch series 8 does not accurately measure deep sleep when compared with Garmin and Polar devices. Data is clearly incorrect and the issue needs to be fixed. This is a healthcare aspect of the watch and should not be providing misleading information.

I’m having the same issue. Just bought the S8, and found it strange that my deep sleep was never higher than 30 minutes.

I downloaded Pillow and when I got the results for the first night, there was a big difference.

something in there algorithm is off.

edgargtryr54 wrote:

According to my doctor and his ecg, my heart is in great shape and so am I. But thank you for your concern.

Good to hear -- my point was your situation is not an absolute global one. People should know, not guess. . .

Same issue.

Comparing results with a FitBit Charge 2 IOS 16/Watch OS9 Apple Watch 4 Last night recorded 12 minutes of Deep Sleep, 1 hour 30 minutes of REM; FitBit recorded 1 hour 33 minutes of Deep Sleep, 52 minutes of REM.

There may be differences in the algorithms used. That said the differences shouldn't be that pronounced.

Hey CapeTownMacaroni,

I am no sleep expert, but have experienced similar "scoring" issues comparing Withings Sleep Mat, Apple Watch and other random wearables since I became interested in health tracking.

I have no association, but if you are interested in digging deep on this I would take a look at The Quantified Scientist. Tons of science based information, comparisons and reviews.

Hope this helps.

All the best.

Interesting conversation Cape Town,

I cannot argue the merits of the Apple Watch Algorithm. If for no other reason than I do not have the knowledge or a large enough personal sample size to produce any data with significance.

TQS does a great job with what he does, but as you mention, his test is on himself which is a baseline of one and does not consider the cofactors associated with other individuals or groups.

Personally, I consider the Apple Watch in the top ten of consumer devices that can be purchased easily, over the counter, at an affordable price to monitor sleep or other health metrics. That being said, I do not consider it a medical device (as close as it may get at times).

Your sample size of 15 with your questionnaire affirms some of my assumptions that that Aura ring is probably better suited at sleep tracking. I would also make the assumption that the sample is a little bias as those usually associated with a biohacking group are more healthy, fit or aware of a health lifestyle than the general population, which may sway the results versus a larger, general population sample.

As a last ditch effort to assist I would do the following if you have not already:

https://www.myhealthyapple.com/apple-watch-not-tracking-sleep-or-sleep-stages-heres-what-you-can-do/

I am not sure if you have stumbled upon this conversation:

https://www.reddit.com/r/AppleWatch/comments/xrxkfw/am_i_the_only_one_whos_aw_records_very_little/

I enjoy the conversation, but I really have nothing else substantial to provide towards a solution as related to the Apple Watch (I am not sure an Genius is going to get you anywhere with this either). I would find it interesting if you were to track with a different device (Aura, FitBit, etc.) if your results would match your current conclusions or create another outlier?

If you find the time, post back any results or solutions you may find (or if you happen to find an ear at Apple to assist with this).

Good luck. All the best.

I think you are missing the point. I am not expecting exact wires to head data. Those of us that have used FB for a long time have gained a correlation confidence from what we feel from sleep and the data. The data from the Apple watch many times just doesnt match how we have experienced that sleep for whatever reason. My expectation is that the two should be somewhat in the ballpark but not dramatically different.

Maybe if we can get the algorithms of each that determine what the states are, we can understand where/why they diverge at times.

bucc208 wrote:

iOS 16 Apple Watch series 8 does not accurately measure deep sleep when compared with Garmin and Polar devices. Data is clearly incorrect and the issue needs to be fixed. This is a healthcare aspect of the watch and should not be providing misleading information.

You can let Apple know your thoughts here:

Product Feedback - Apple

I always wear Fitbit and Apple Watch to bed. I have the Pillow app which uses the Apple Watch 16 facts. Apple 16 as well as Pillow in the past have my deep sleep almost 2 hours higher each night. Fitbit has to be right. I am an extremely light sleeper. Above is Fitbit’s last night results.Above are Apple’s and Pillow’s night night’s results. I have been in contact with Pillow about the differences. I have used Pillow for 4 years. Most of the comments on this forum state Apple shows less deep sleep. For me, it shows much greater deep sleep. Also, Apple and Pillow stop recording when I get up in the middle of the night to use the restroom. I am able to adjust the wake up times in Pillow. Fitbit shows I had 50 minutes of deep sleep last night. Apple and Pillow show I had 2 hours and 34 minutes of deep sleep last night.

Hello,

I was searching for this exact situation, glad I stumble on this thread. I have the same conclusion.

For example last night, in Apple sleep tracker it indicates 46 min of deep sleep.

I also use the Autosleep app and the deep sleep indicates 2h 34min.

I had a Garmin watch for a year, and the sleep analysis was more inline with the Autosleep app.

Like it was mentioned, I guess the Apple algorithm for sleep analysis is different?