Level 1

21 points

Apple Sleep App 6 Month Tracking Inaccurate

Sleep tracking with Apple Sleep app is accurate for day, week and month (IOS 9.4 watch; IOS 16.4.1 phone) but 6 month data is completely inaccurate and does not match other data sets. This has been an ongoing problem since I started sleep tracking and I have followed every recommendation. I suppose this is more of a complaint than an ask but it is extremely frustrating to invest so much money in Apple products to have an Apple system app that is touted but inaccurate. I really wish I went to bed two hours earlier than I did and slept 1-2 hours longer over a 6 month period, but alas, no.

Apple's basic remedy is for me to waste my time on the phone going through steps that I have already taken. And, I refuse to add another sleep app to my phone and watch and use up more battery life. Since this information is reported to some health studies it should be reviewed by Apple and corrected. And, it is difficult to find a topic that matches since System Apps in general is not listed in the drop down list. Shame on Apple.

Anyone else frustrated?

iPhone 12 mini

Posted on May 5, 2023 2:41 AM

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B3NI123

Level 1

26 points

Posted on Jul 22, 2023 8:18 AM

Solution: the standard view of the data is the “stages” view. Using the Amounts view solves the issue.6 months —> Show more sleep Data —> Amounts

Cause: I don’t know why AVG TIME ASLEEP is shown wrong when looking at stages. It seems they calculate the average “sleep start” and “sleep end”. But that also doesn’t make sense, and also I can’t find the way they would calculate this. Maybe they use a kind of elastic day, where a day ends when you go to sleep, not at midnight.Here is what I have tried:

Night 1 2020-04-16 10:00 PM 2020-04-17 4:00 AM

Night 2 2020-04-18 1:00 AM 2020-04-18 4:00 AM

On a weekly and monthly basis, my health app calculates an average of 4h30min sleep time, but on a 6-month basis, it calculates an average of 6 hours. Also, 6 months (when not looking at amounts) shows: Sleep starts 11:30 PM and sleep end 5:30 AMAssuming these averages are simple arithmetic means, the average start time is (10:00 PM + 1:00 AM)/2, and the average end time is (4:00 AM + 4:00 AM)/2. However, the issue with this is that time doesn't function like regular numbers due to the cyclical nature of the 24-hour clock. If you consider 1:00 AM as 25:00 (in a 24-hour format, considering it as an extension of the previous day), then the average start time would be:(22:00 + 25:00)/2 = 23:30 (or 11:30 PM)That aligns with Sleep Start in the Health app. But not with sleep end.

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B3NI123

Level 1

26 points

Nov 27, 2023 1:26 AM in response to TheDüde

The miscalculation is partly my fault. After a specific time, apple seems to put the hours slept on the next day. I have added some more hours to Tuesday; the average is right. But not on the 6-month view, for sure.

Added sleep from 1:22 PM until 6:22 pm (5 hours)

4:38 are put on the first day, and 22 min is placed on the next day. I don’t know why. Timezone or whatever. Maybe Apple considers sleeping after a specific time for sleep of the next day.

Month view: sometimes says 4h38 and 2h30

2:30 because 4:38 on 1 day and 00:22 on the next day, averaged 2h30.

Then I have added 4 hours of sleep on the second day, and the average was at 4h30 (correct)

(5 hours on day 1 and 4 hours on day 2)

6 Month view:

Stages view says AVG TIME ASLEEP: 5hr (Sleep Start: 7:41 AM and Sleep End 12:41 PM)

Amounts view (correct) says AVG TIME ASLEEP: 4hr30min (Sleep Start: 7:41 AM and Sleep End 12:11 PM)

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Yes, the tracking stops at the wake-up time (Seen in the alarms of the clock app). If I sleep past that timer (not supposed to), I add the sleep afterward, as you proposed. Reminder could be a solid way. Maybe you could also set that timer to 16 pm. When you wake up, the Apple Watch also automatically asks you if you are awake after a certain time. In my experience, the time difference between the wake-up time and deactivation is reliably removed from the sleep data. There are also some sleep-tracking apps that should track if you are sleeping, no matter what the wake-up time in the clock app.

Based on the Umlaut in your name, I guess you are from Germany. So maybe the issue affects only German people 😄

Beste Grüße

CovTech

Level 1

13 points

Jan 6, 2024 5:59 AM in response to Barleigh

I have noticed the exact same behavior. This is best qualified as a big because it’s reporting inaccurate 6 month sleep date. I suspect this is known or basic quality assurance testing hasn’t been completed.

how do we file a bug report?

Jul 20, 2023 6:33 AM in response to Barleigh

Same here, I average 7 hours day, week, and month and my 6 month never changes. Says 10.44 hours of sleep. Never updates! 😡

otto173

Level 1

12 points

Sep 5, 2023 12:26 PM in response to Barleigh

Indeed, this one of several issues. Quite unprofessional.

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