App Features
Sleep Tracking — What QRNT Measures While You Rest
QRNT tracks total sleep, sleep stages, efficiency, and latency every night — automatically. Learn what each metric means and how to use it.
Women's Health & Cycle Tracking — Core vs. Complete Explained
QRNT Original includes core cycle tracking. QRNT Slim adds full four-phase insights, symptom logging, and personalized tips — no subscription.
HRV — Your Daily Readiness Score Explained
HRV tells you whether to push hard or recover today. Learn how QRNT measures your personal HRV baseline and what your score actually means.
Stress Tracking — How QRNT Reads Your Nervous System
QRNT's stress score uses HRV, heart rate, and skin temperature to show how your nervous system is handling the day — in real time.
SpO2 (Blood Oxygen) — What It Means and How QRNT Tracks It
SpO2 measures oxygen in your blood. QRNT tracks it continuously — useful for altitude, sleep quality, and recovery monitoring. Not a medical device.
Activity Tracking — Movement, Workouts & Your Daily Output
QRNT tracks steps, active calories, heart rate zones, and workouts. Start manually for precision or let the ring auto-detect your activity.