So, I decided to try this app. It just isn't a good fit for me.
Thing is, I wear my Apple Watch mainly as a watch. I work from home, and put the watch on when I go somewhere, and take it off and put it on the charger when I get back home. I'm just mildly curious about how my sleep is, so figured I'd give it a go for a few days and see what it reveals.
The original concept of the app is just daft. I suppose, though, they had to do something to distinguish from all the other sleep-related apps, and so they latched on to "auto". To no surprise, they evidently found that wearing/no wearing watch moving/not moving phone is a horrible indicator of sleep times.
I realize the whole point is to avoid having to open and app and push a button. But... why not ALSO include the button?!
I downloaded the app, then forgot about it for a couple of days. (Frankly, I fell asleep forgetting to put my watch on!)
First UI gaff I noticed - I have no idea how I might completely delete a day's record. I have a couple of days of completely meaningless data now. One day I "slept" 13 hours, and another one 20.
The UI in general is busy, overly-bright, and confusing, IMO.
I tried the app for one night, and it doesn't tell me much of use. I got ONE heart rate reading - when I woke up and unlocked the phone, I guess. Maybe it is that I had background refresh off on my phone globally, but I don't think communicating with the watch has anything to do with background refresh? I will try again tonight with background refresh off.
It has some representation of some time with "lowered heart rate" but for the life of me can't find an actual number, if it even recorded it. But how does it know "lowered heart rate" if it doesn't have numbers? Maybe just an assumption based on an assumption - it assumes I was sleeping so assumes I had a lowered heart rate?
I did find the setting to tell the app I don't want to use watch on/off charge and phone activity to detect sleep.
I also have some interest in this, because I did some work a while back toward developing an app to help detect sleep apnea symptoms. Alas, we had to abandon the project due to liability concerns after the Samsung battery disaster: the app required you sleep with an iPhone strapped to your stomach. (We used a "sports wallet" thin-fanny-pack-type thingie). No way I wanted to be responsible for somebody's bed going up in flames! The only practical approach is with a small/safe wearable like a watch. (OK, let's HOPE safe! Any watch-catching-on-fire stories?)
(I notice AutoSleep publisher has some advice on settings "if you sleep with your phone in your bed". IMO, the advice should not be to change the app settings... the advice should be: DON'T!)