The promise of Apple Health is that every workout, recovery window, and sleep session can feed into a smarter picture of your overall wellness. My Bio Age builds on that promise by converting those raw data points into the MyBioAge Index, a functional age score that shows how you are trending in the context of your current routines. Instead of sifting through dozens of charts, you see one score that is grounded in science and grounded in your day-to-day behavior.

From raw metrics to a functional score

Everything starts with the metrics you already trust in Apple Health. We ingest VO2 max, heart rate variability, resting heart rate, sleep duration, and active energy to build a multi-dimensional view of how your body is adapting. Each metric is normalized so that a small fluctuation does not over-influence your score, and then weighted to reflect how strongly it correlates with functional aging in peer-reviewed literature.

VO2 max normalization. We smooth weekly aerobic capacity trends to make sure a single tough interval session does not spike the score.
HRV stability. Heart rate variability is evaluated against your 60-day rolling baseline so we capture meaningful recovery improvements.
Sleep quality weighting. Deep and REM sleep ratios contribute more than raw hours, because time in bed without quality recovery can mask fatigue.

Context that adapts with you

Your MyBioAge Index updates every time Apple Health receives new readings. When you increase consistent zone 2 training or tighten your sleep schedule, the score responds within days. If you are experimenting with a new routine, trends let you separate the signal from the noise. The app highlights whether you are accelerating progress, holding steady, or slipping, so you can adjust your plan before small setbacks turn into month-long plateaus.

Coaching nudges without the guesswork

We designed the insights tab to suggest specific actions tailored to your latest data. Instead of generic advice, you will see guidance like increasing low intensity volume because VO2 max trendlines flattened, or dialing back late-night screen time when HRV dips below baseline. Short, plain-language explanations surface the research that informs each suggestion so you know why we are recommending a change.

Start measuring what matters today

The MyBioAge Index is available the moment you sync the app with Apple Health. Download the app, connect your existing data, and your baseline functional age appears within seconds. From there, every workout, recovery day, and habit shift is reflected in a single score that keeps the focus on long-term vitality, not just the next hard session.