Understand your nights, transform your days
Your ring silently tracks every phase of your sleep — deep, light, and REM — then scores your night so you wake up knowing exactly how restorative it was.
4 Stages
Your sleep, decoded phase by phase
5%
Brief arousals between cycles
45%
Body relaxes, mind unwinds
25%
Physical repair & growth
25%
Dreams & memory consolidation
Sleep Score
Your nightly score, at a glance
The Technology
How it works
Infrared PPG sensors
The ring's LEDs and photodetectors measure blood flow changes through your finger — the ideal location for overnight tracking with minimal movement artifact.
3-axis accelerometer
Detects micro-movements and body position changes to distinguish between sleep stages and determine sleep onset and wake times.
Temperature sensor
A high-precision NTC thermistor tracks skin temperature trends overnight, revealing circadian rhythm patterns and recovery quality.
Paired formula
Poor sleep score? Your formula adapts.
Soothe. Repair. Awaken.
When your KEORA detects consistently low sleep scores, elevated resting heart rate, or reduced deep sleep percentage, it may recommend the SLEEP formula — 5-HTP and L-Theanine to support natural sleep quality and help you wake up restored.
Learn about SLEEP →Ready to transform your nights?
Start understanding your sleep tonight