ONESS reads your wearable — SpO₂, heart rate, HRV, respiratory rate, activity — and computes a daily O₂ Adequacy Score. Your personal wellness reflection.
Join the private beta → Requires iPhone (iOS 17+) and a compatible wearable — Apple Watch, Ultrahuman Ring Air, Garmin, Fitbit, Pixel Watch, Amazfit, Masimo, Oura, Whoop and more. Free during beta.Five signals from your wrist, one glanceable score, and the trends behind it.
A single 0–100 number combining SpO₂, respiratory rate, activity, environment, and altitude. Computed on your iPhone — no cloud round-trip needed.
Pick Today, Week, Month, Year, or a custom range. See your baseline emerging. Tap any day to drill in.
Your OAS on your watch face — circular, rectangular, corner, or inline. Updates after every sync.
Glance from your Home Screen or Lock Screen. Colour-coded tier: green Optimal, yellow Borderline, orange Needs care, red Low.
One gentle notification at 07:30 with your last synced OAS. No spam, no upsells, no dark patterns.
Never a diagnosis. Sign in with Apple. Data lives on your device by default; the cloud copy is only for your Dashboard.
Tap the beta link, install ONESS on your iPhone, sign in with Apple.
ONESS reads your wearable's signals from Apple Health — SpO₂, heart rate, HRV, breath. Works with Apple Watch and dozens of other devices that write to HealthKit.
Tap Sync in the app. Your OAS appears on the widget, the Dashboard, and your Watch face.