Stats page for each sleep session


I love how SAA tracks the various stages of sleep and the resultant graph but I find it frustrating that only deep sleep and snoring times are quantified. Also duration seems to be meaningless. Could we please get data displayed for awake, light sleep, REM sleep and total sleep (instead of tracking duration)?

Sometimes my tracking starts before and works past my awake time - so I may start the tracking, but read a magazine article before falling asleep and then forget to stop tracking after waking up. Or my son may wake me up in the middle of the night and I’ll be awake for an hour. SAA identifies awake times but doesn’t provide any time values for this - only the total duration of my tracking session, which is meaningless in this scenario.

Most modern fitness watches now track sleep stages and provide these time values in their summaries. Would be great to see it in SAA.


Hello Michael, we always show duration of the sleep in all stats this is tracking time - awake time…

We try hard to detect any awakes during sleep tracking but sleep actigraphy (the technique we use for sleep tracking) is great at telling deep sleep from light sleep, but it is not that great in recognizing awake time when you are not moving from deep sleep. For that we use different heuristics and in many cases we need your help. This is why we have the pausing feature. You can configure it to add another 5 minutes just by flipping the phone. Any pausing time is subtracted from the overall sleep time and thus contributes to the sleep deficit.

The heuristics we use include various awake detection techniques which can be configured in Settings > Sleep tracking > Awake…

We have implemented automatic awake detection based on significant awake-like movements. This works very well with a wearable, but if you are using a phone in bed you would need to take your phone to the bathroom with you for example. Than we have awake detection when there is light in the room, heart rate is high - wearable is need for that. When someone is talking in the room or phone is being use…

Of course most of the technique are far from ideal for a typical insomniac case when laying down in the bed trying to sleep. We did not yet fully cracked this problem.

Please see more on this topic here:

Hi Petr

Thanks for the quick reply. I now understand the issue with awake detection so will look at how I can improve it in my circumstances (actually it’s for my son and I want to automate it somewhat). What are your thoughts about displaying the data - awake, rem and light sleep total periods per session?

Also what about awake detection with the sleep phaser, esp when leaving the room? Does the light need to be turned on or can it sense that there’s no movement at all between two awake states?