Meet the age
your body is
living

Health Age is an estimated wellness metric based on recent patterns in the health signals you choose to make available. It combines your personal history with supported reference ranges. It is not a biological-age measurement, a diagnosis, or a lifespan prediction, and has not been externally calibrated to a population.

Body function gives you a separate Functional Age range from supported health indicators, alongside the evidence available across your body's systems. Your birth date and calendar age are excluded from this estimate; calendar age appears only for comparison. The range reflects the limits of the available evidence. Upstream measurements may themselves use age. Functional age requires at least 3 indicators with compatible age models. The models for automatically collected data are not ready yet. You do not need to enter measurements or complete extra tests.

Apple Watch is optional. Health iAge needs enough recent, supported Apple Health records on your iPhone. Before installing, open Health > Browse, select a category and a data type, such as Activity > Steps, then check Show All Data and Data Sources & Access for dates and contributors. Records in one category do not establish that enough supported evidence is available for an estimate. After installing, review the separate Health Age and Functional Age statuses under Feature availability on the subscription screen before purchasing. A missing result does not prove read access was refused. In version 1.4.7, automatic imports alone cannot produce a Functional Age range. Age results require an active Health iAge+ subscription or eligible trial; paying does not supply missing data or models.

Your Apple Health samples and derived wellness results are processed and stored on your devices. Health access is read-only. There is no health-data account or developer health-data upload. Optional, consent-controlled product diagnostics are described in our Privacy Policy. You can change Health permissions or delete the app's local health data in Settings.

Yes. Health iAge is free to download. Viewing your current numeric Health Age, age difference, Functional Age results, and related insights requires an active Health iAge+ subscription or eligible trial. A subscription does not guarantee a result: sufficient recent, supported data and applicable models are also required. A seven-day introductory trial is offered only when Apple confirms eligibility and starts after you confirm the purchase. Localized prices and renewal terms appear before purchase.

The iPhone app requires iOS 18 or later. Apple Watch features require watchOS 11 or later. The adult Health Age estimate supports ages 18–79, subject to sufficient compatible data. Ages 14–17 may receive limited youth wellness guidance without an adult age estimate. Visit Support for setup and eligibility details.