Sleep score

Sleep score is a complete summary of your sleep health.

Sleep score draws a lot of inspiration from the Pittsburgh Sleep Quality Index.

Dashboard - Sleep Score card
Left ☰ menu → Trend → Trend tab → Sleep score chart

sleepscore annotated
Figure 1. Sleep Score on the card
Figure 2. Sleep score in Charts section

Note You can choose between colors matching your theme, or color-coding (each dimension has its own color across the whole app; Settings > Personalize > Stats > Color palette).

If you see you are consistently behind some target for any of your dimensions, you can setup goals. For instance you are sleeping just 6:00 on average which is quite bad for an adult, so you can setup a goal to increase your sleep duration to at least 6:30 and the app will guide you gradually to achieve that goal…​
The app will point out some notable trends and also suggest some changes in the Advice section.

1. Sleep score dimensions

There are eight dimensions that contribute to sleep quality. Each of the dimensions has a healthy range and an unhealthy range.
The app combines all dimensions into one "Sleep Score" for simplification.


Healthy durations are adjusted according to your age as defined in Settings → Stats → Year of birth

  • General or not set (6.5 - 9)

  • School age (9 - 11)

  • Teenager (8 - 10),

  • Young (7 - 9)

  • Elderly (6 - 9)

If you’re in the healthy range for a certain dimension, it lights up green and you get one point. Every line can also turn red if the values are in a very unfavourable range.

Note If you are missing some charts, it means you do not have the required sensor, or the app does not have enough data to estimate it. If your irregularity pie chart is missing, there are probably gaps in the graphs. You can consider Automatic tracking start or Sleep time estimation features, if you often forget to start the tracking.

1.1. Sleep Score

score pie

Overall score combining all your other sleep metrics.


Percentage of the score (0,100).

Healthy range

as close to 100% as possible

1.2. HRV Gain

hrv pie

The difference between your HRV measured during the first low activity period (hrv before) of your sleep and the HRV measure at the last low activity period before awake up (hrv after) (see details here).

Top Figure

Difference between hrv after and hrv before.

Bottom Figure

HRV after (the last low activity period before awake up).

Healthy range

over 2

Unfavourable range

under -5

1.3. Breath disturbances

BR pie

Breathing disturbance episodes per hour, read more about this topic here and here.

Top Figure

Average breathing disturbance episodes per hour.

Healthy range

under 10

Unfavourable range

under over 20

1.4. Regularity

irregularity pie

How regular your sleep is. Sleep Regularity Index, SRI and Variance of your mid-sleep hour.

Top Figure

SRI, more details here

Bottom Figure

Deviation of sleep duration and mid sleep hour

Healthy range

Over 80 for SRI and under 0.5 hours for regularity

Unfavourable range

Less then 60 for SRI, over 1 hour fpr mid sleep hour variance

1.5. Deep Sleep

deepsleep pie

How long you’ve been in deep sleep compared to the total sleep duration.

Top Figure

Average % of deep sleep

Bottom Figure

Duration of deep sleep phases

Healthy range

over 30%

Unfavourable range

under 20%

1.6. Duration

duration pie

How long have you been sleeping.

Top Figure

Total sum of all your sleep phases of the day.

Bottom Figure

Deficit or surplus from your sleep daily goal.

Healthy range

6.5 hours to 8.5 hours, see how this differs with age

Unfavourable range

less than 6.5 hours, or more than 8.5 hours

1.7. Efficiency

efficiency pie

How long you’ve been actually sleeping vs. being in bed.

Top Figure

Sleep/awake ratio in %

Bottom Figure

Duration of awake periods

Healthy range

over 95%

Unfavourable range

under 85%

1.8. Rating

rating pie

Your average subjective rating.

Top Figure

Your rating

Healthy range

over 3.5 stars

Unfavourable range

under 2 stars

1.9. Snoring

snoring pie

How long you’ve been snoring compared to the total sleep duration.

Top Figure

Percentage of your snoring

Bottom Figure

Total duration of snoring

Healthy range

under 3%

Unfavourable range

over 10%