Blood Oxygen SpO2 for Watch

Blood Oxygen Tracker brings your blood-oxygen, heart-rate, and sleep data from
Apple Health into one clear timeline, with trends, overnight views, widgets,
and notifications for newly synced readings at or below your chosen threshold.

IMPORTANT: An iPhone alone cannot measure blood oxygen. Automatic SpO2 import
requires a compatible Apple Watch or a pulse oximeter whose app writes readings
to Apple Health. Blood-oxygen features and availability vary by device, country,
and region. You can also log readings manually and estimate your heart rate using the iPhone camera.

APPLE HEALTH HISTORY
- View blood-oxygen and heart-rate readings from Apple Health
- See 7-, 30-, and 90-day trends, statistics, and tagged context
- Import readings from compatible Apple Watch and pulse-oximeter apps
- Log blood oxygen and heart rate manually
- See recent information at a glance with home-screen widgets

SLEEP & OVERNIGHT OXYGEN
- Review overnight blood-oxygen readings alongside your sleep window
- See minimum, average, and time below your chosen threshold
- Get an overnight summary when compatible sleep and oxygen data are available

THRESHOLD NOTIFICATIONS*
- Choose your own caution and low thresholds
- Receive a notification when a newly synced reading is at or below your
selected threshold
- See when each reading was recorded and synced

HEART RATE & GUIDED BREATHING
- Estimate heart rate using your fingertip, the iPhone rear camera, and flash
- Camera heart-rate results are clearly presented as estimates, not medical
measurements
- Complete guided breathing sessions with visual pacing
- Add tags and notes such as resting, after exertion, medication, oxygen flow,
or altitude

APPLE WATCH COMPANION
- Glance at heart-rate and blood-oxygen readings already recorded in Apple
Health
- Log blood oxygen and heart rate manually
- Complete guided breathing sessions without opening your iPhone
- Follow step-by-step guides for recording supported readings with Apple
features and viewing the synced result
- Requires watchOS 9 or later

SHAREABLE PDF REPORTS
- Export a PDF with a selected date range, statistics, distributions,
below-threshold context, tags, and notes
- Reports include a Sources section for health and wellness information
- Health readings remain on your device and in Apple Health

*Threshold notifications require a compatible device or app that records
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