iPhone Apple Health (Sleep) vs. Garmin Connect sleep

[Silickon]

Hi. I have a Garmin Instinct watch, which I wear 24 hours a day. I have always tracked my sleep in the Garmin Connect app, but now I would like to try using Apple Sleep in Apple Health.

Health is set up to receive sleep information from my Garmin watch, and not my phone, but I’m confused that two apps can tell me such different sleep results when they get their data from the same source.

Garmin almost seems to think that I either sleep poorly or only fairly every night, where Apple Health says I sleep really well every night (which I know is definitely not true, as I’m awake a lot during the night).

What are your experiences with sleep tracking in Apple Health vs. Garmin?

 

[pacorob]

I also own a Garmin watch (Forerunner 255 Music) and wear my watch daily also during the night. The output in the Garmin app seems pretty accurate. I haven't looked into the data in Apple Health app before as far as sleep data is concerned. I just checked the Apple Health app and see that indeed for last night sleep it shows a difference as well:
84/100 score Garmin app vs 98/100 in Apple Health app, Garmin restless moments: 36 vs Apple Health 19/20 interruptions (not sure if these two can be compared though)

Side note: I do know that Garmin limits certain data (e.g. GPS location) to be shared with Apple see this, however it appears sleep data is not affected by it. I do sync data from Garmin to Apple Health to see the data in some third party apps/widgets that only support Apple Health for running data.