Your Data, Simplified.

The R09 connects over Bluetooth 5.2 to the free QRing app (iOS 8.0+ and Android 5.1+, available in 33 languages) — no subscription required, ever. Keep Bluetooth on and the ring quietly logs your data in the background all day.

What the app tracks

• Heart rate — continuous monitoring throughout the day and night.
• Sleep quality — automatically detects when you fall asleep and generates a full sleep report each morning.
• Blood oxygen (SpO2) — on-demand and background readings.
• Body temperature — skin temperature trends over time.
• Stress levels — estimated from heart rate variability.
• Steps & energy — daily activity and estimated calories burned.

See your trends

Every metric is broken down into daily, weekly, and monthly views, so you can see real patterns over time instead of a single number. No paywall, no premium tier — every feature is included with the ring.

Need your exact ring size before you order? Check our Sizing Guide.