The downside, which Redditors and reviewers often point out, is that there's a $6 per month membership cost to unlock personal insights, like in-depth morning sleep analysis and temperature trend monitoring (which can even predict early stages of illness). Non-paying members only have access to sleep, readiness, and activity insights.
The Oura ring measures a variety of health metrics, including: Heart rate: The Oura ring uses LEDs to measure your heart rate 24/7. Blood oxygen: The ring uses red and infrared LEDs to measure your blood oxygen levels while you sleep. Breathing: The ring uses LEDs to measure your breathing regularity and respiratory rate while you sleep.
Temperature: The ring uses a digital sensor to measure your temperature variations. Activity: The ring uses an accelerometer to track your movement and activity 24/7. Sleep: The ring provides sleep insights, including sleep duration and sleep quality. Total burn: The ring calculates your total burn, or the number of calories you burn in a 24-hour period.
Menstrual cycle: The ring can track your menstrual cycle. The Oura ring uses this data to provide daily scores for sleep, activity, and "readiness". It can also help you determine your chronotype, which is your body's natural preferences for sleep or wakefulness.