About Sleep Rings & Quality.

AutoSleep Quality Rings

AutoSleep uses a concept called Sleep Rings. You can think of these as the flip side to your Apple Watch's Activity Rings. Instead of filling them by moving, exercising and standing, you fill them simply by sleeping. 

If you wear your Watch to sleep, then your sleep data will be represented by sleep rings. 

☾ - Time Asleep

This reflects the time that you spent asleep. You fill this ring by sleeping enough hours to meet the sleep hour target that you set in the AutoSleep wizard. 

 - Quality Sleep

The Quality ring shows hours of quality sleep achieved. This makes it easier to compare with other days. This looks at the overall sleep time, how much light sleep, how much deep sleep, how restless and the nocturnal dip in heart rate and determines how much quality sleep you had. The ring completion target is 85% of your required sleep hours. You can change this below. 

 - Average Heart Rate

This is your average heart rate during the time that you were asleep. The ring reflects the quality of the nocturnal dip in heart rate. This is measured as the percentage difference between your average heart rate when not engaged in physical activity and your average heart rate when sleeping. If you are interested in understanding more about nocturnal dip, there is an interesting study here

Z - Deep Sleep

The Deep Sleep ring is the number of hours where you met a sufficient nocturnal dip in heart rate combined with minimal movement. Refer the "Profile" section below to change how this and the heart rate ring are calculated. The main value of this ring is to compare it against your own historical data rather than to other people. The ring completion target is 35% of your required sleep hours. You can change this target below. 

AutoSleep Quality 7 Day View

If you scroll down, there is a breakdown of each individual ring with a comparison to the trailing 7 days. 

Ring Targets

Here you can also change your targets for required sleep hours, quality target and deep sleep target. This is done by pressing the "..." button.

You can also change your profile. 


To deliver more relevant sleep quality analysis, the profile section is broken up into three types. These have an influence over the way the heart rate ring is represented and deep sleep is calculated. 

  • Athlete
This is meant for people that have a high level of heart fitness. Normally this results in a significant nocturnal dip in heart rate. Often around 20%. The main reason for this setting is to change the calculations so that fluctuations in heart rate and deep sleep can be more easily portrayed. 
  • Normal
This is the default. It is suitable for most people. 
  • High ♥
This is primarily to allow people that don't experience a nocturnal dip in heart rate to be able to reflect deep sleep. People with pacemakers, heart problems and lower levels of heart fitness should choose this option. It removes the requirement of nocturnal dip from deep sleep tracking and changes the presentation of the heart rate ring. 

Sleep Graph

Just below the sleep clock is a sleep analysis graph. 
AutoSleep Sleep Graph
The graph uses an intelligent display where it labels three graduated sections which shows your awake time, lighter and deeper sleep zones. When you stop scrolling, the labels fade out and your heart rate fades in. There is also a line showing the overall average heart rate. 

Here you will find one graph per sleep session. A sleep session is defined as any period that you have been asleep with a break under 4 hours in duration. 

  • Restlessness

The blue graphics indicate the periods that you were asleep. The higher they rise, the more active you were.

In the above chart, it indicates that 75% of the time asleep was spent with a low level of, or no tossing & turning. 

The Restful sleep percentage is the percentage of time asleep that you were significantly still. 

A purple bar indicates that you manually edited a block of time as asleep when it was originally marked as awake. 

  • Awake

The green graphics indicate periods in which you were awake. 

If you use the "Lights Off" feature, this section will indicate how long it took to fall asleep after turning off the lights. 

It will also look at the total time in bed and calculate the time that you spent awake during this period. 

  • Heartrate

The hearts plot your heart rate during the time that you were asleep. Brighter hearts indicate that the heart rate had a significant nocturnal dip (see heart rate ring above). Darker hearts indicate that the heart rate was above your daytime average regular heart rate.

This displays your average heart rate whilst you were asleep as well as the minimum and maximum values recorded for each period of sleep.  

It compares this to your average resting heart rate recorded for 24 hours before this sleep period commenced, that is, it excludes any time that you were sleeping, active or working out. It displays this as a percentage. Ideally you should be seeing at least a 10% drop in average heart rate, as this is a good measure of deeper sleep. 

  • Deep Sleep

Periods of deeper sleep are shown as purple blocks. This is determined according your profile setting (above).