How It Works

Three Levels to Get Younger

More data means a more precise score. Choose your level. All three are free.

100% Free

Every Level. Zero Cost.

Immortals is free to join and free to use across all three measurement levels. The lifestyle interview, wearable data, and blood biomarker entry all cost nothing. You bring your own data. We score it, rank it, and track it over time.

The Immortality Index®

Three Levels of Precision

Each level adds data. Each level increases accuracy. Each level unlocks a higher maximum score on the Immortality Index®.

Level 1 — Lifestyle Interview
400
/ 1000

Answer 10 Questions. Get Your Score.

A 2-minute lifestyle interview covers the nine factors with the strongest evidence-based link to biological aging: exercise frequency, sleep quality, diet, body composition, smoking status, alcohol consumption, stress levels, chronic conditions, and family longevity. Your answers are processed through the Immortality Index® algorithm, adjusted for your age, geographic region, and urban environment, to produce an estimated biological age and a score from 0 to 400.

What You Need
2 minutes and honest answers
Accuracy
Estimated (~60%)
Score Range
0 – 400 / 1000
Cost
Free
Get Started →
Level 2 — Wearable Data
600
/ 1000

Add Your Wearable Metrics. Sharpen Your Score.

Level 2 incorporates biometric data from your wearable device. Enter your heart rate variability, resting heart rate, VO2 max, step counts, sleep patterns, and recovery metrics manually from your Apple Watch, Garmin, WHOOP, Oura, or any wearable. These objective measurements replace self-reported estimates with real data, and the maximum scoring range increases to 600.

What You Need
Data from Apple Watch, Garmin, Oura, WHOOP, or compatible device
Accuracy
Tracked (~80%)
Score Range
0 – 600 / 1000
Cost
Free
Enter Wearable Data →
Level 3 — Blood Biomarkers
800
/ 1000

Enter Your Blood Work. Unlock the Full Index.

Level 3 is the complete Immortality Index®. You enter six standard blood biomarkers from any routine blood panel: HbA1c (glycated hemoglobin), fasting glucose, triglycerides, HDL cholesterol, total cholesterol, and hs-CRP (high-sensitivity C-reactive protein). These markers cover metabolic health, cardiovascular risk, and systemic inflammation — the three pillars of biological aging. Combined with your lifestyle data and wearable metrics, the full algorithm produces a score from 0 to 800 with near-clinical accuracy.

What You Need
Standard blood panel from any lab or physician
Accuracy
Verified (~95%)
Score Range
0 – 800 / 1000
Cost
Free (you pay only for your own blood test)
Enter Blood Biomarkers →
The Continuous Race

Measure. Compete. Get Younger. Repeat.

The leaderboard resets after every data is inserted. Your score is only as good as your latest data.

01
🧪

Measure

Take the assessment or update your data with wearable and blood biomarker results.

02
📊

Score

Your Immortality Index® is calculated based on your current data level.

03
🏆

Compete

See where you rank globally, by nation, city, and age group on the leaderboard.

04
🔄

Repeat

Improve your habits. Retest anytime. Watch your score climb.

One Leaderboard. Every Level.

All members compete on the same leaderboard regardless of their data level. A Level 1 user with a score of 520 ranks alongside a Level 3 user with a score of 870. The difference is precision: higher levels unlock higher possible scores, which means more data gives you a competitive edge.

The leaderboard ranks members across multiple categories so you can compete against the people who matter most to you:

Global By Nation By City By Age Group By Environment Most Improved

Ready to Get Younger?

Choose your level. All three are free.

Get Your Score →