A Readiness Score is designed to give you a better idea how restored your body was by the night’s sleep.
The score is based on three measurements taken each night by your Apple Watch: hear rate variability, resting heart rate, and restful sleep duration.
In a blog post, developer David Smith explains more about the score:
These three values are then combined into a single numerical score from 0 to 100. With 100 indicating that all three measures are pointing you towards a highly restorative night. And 0 indicating that your body appears to have been really struggling during the night. Additionally, each composite value, and its comparison to baseline, is shown for reference.
It is important to treat this value as an indicator and not a clinical measurement. While there is substantial research to indicate that these three factors generally correlate with your sleep performance, they can be impacted by a wide variety of factors that can reduce their precision. The idea here is to give you a general sense of how prepared your body is and for you to then use that to make healthy choices for your day.
After each night’s sleep, you can find the score on the iPhone app. Tap the heart shaped icon in the top right corner.
Sleep++ is designed for the iPhone and Apple Watch. It’s a free download on the App Store.
A $1.99 in-app purchase will remove all of the advertisements.
