Digital Twin

Your whole health, in one picture.

140+ insights across seven areas of your health — each explained in plain language and built on published research. Your picture fills in as you share.

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Free to start. Set up in a few minutes.
The Carthalis Digital Twin: an overall score of 76 out of 100 with a score for each area

Seven areas, one view.

Body & fitness, medical health, nutrition, sleep & recovery, mental health, longevity and environment — every insight tells you where you stand and what it means.

  • Strength percentiles, VO₂max and body composition
  • Blood pressure, glucose, disease risks and medication burden
  • Sleep regularity, efficiency and overnight HRV
  • Stress, mood and validated check-ins

Try our free tools →

Quick checks you can do today.

No equipment needed — just your phone and a few minutes.

  • Ear age: a guided tone test with headphones
  • Face age: an estimate from a photo
  • Heart rate: measured with your phone's camera
  • Strength percentiles: from the lifts you log

Try the free ear age test →

Longevity and heart health, explained.

Educational estimates that show which habits move the needle — never a clinical verdict.

  • Biological age, heart age and fitness age
  • Life expectancy from population life tables and your habits
  • Life's Essential 8 and 10-year heart risk

Try the free biological age calculator →

Your environment, too.

Turn on location (optional) and Carthalis adds what's around you to the picture.

  • Air quality and pollen species near you
  • UV and heat for planning time outdoors
  • Your sleep environment

Works with the rest of Carthalis

Insights support self-awareness — they don't replace professional care. Medication checks are informational; discuss them with your provider.

Trust & Safety →

Common questions

The Carthalis Digital Twin is one picture of your health: 140+ science-backed educational insights across seven areas — body & fitness, medical health, nutrition, sleep & recovery, mental health, longevity and environment. It fills in from what you share — what you tell us about your health, lab results, check-ins, logs and devices (optional) — and each insight says where you stand and what it means. Wellness education, not diagnosis.

No. Many insights work from what you tell us about your health, lab uploads, validated surveys, and manual fitness or nutrition logs. Connect Apple Health, Health Connect or a wearable (optional) for richer sleep, activity and recovery context — we encourage it.

No. The Digital Twin provides educational insights and coaching context — not medical diagnosis, treatment, or emergency care. Carthalis is not a medical device. Discuss clinical decisions with your healthcare provider.

Carthalis ships 140+ educational scores across longevity and combined ages, strength percentiles, fitness age, nutrition and lifestyle markers, pollen and air quality (when location is enabled), Life's Essential 8, and more. Your available scores grow as you add data you choose to share.

Create a free account, then add context your way: ask your coach a question, upload a lab PDF, take a validated survey, log a workout, or connect devices when ready. Insights appear in your Digital Twin as your picture fills in.

No. Insights and age estimates are for self-awareness and motivation — wellness education, not diagnosis. If something feels urgent or serious, call your local emergency line or seek professional care.

See your whole picture.

Free to start. Set up in a few minutes.

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