Pillar 1 of 7
Sleep
How long and how well you sleep, over the last 7 days.
Fitness age · educational estimate
How young is your body?
A 60-second educational estimate
Six short questions and you see your fitness age, from a published research model of Norway's HUNT Study. No sign-up. Your data stays on your device.
- No sign-up
- Your data stays on your device
- Published research models
The helix
Seven pillars. One living helix.
Every rung is one pillar of your habits. The better it goes, the brighter and thicker it glows. What you haven't measured stays frosted glass: an invitation, not a grade.
Illustration with sample values, not anyone's real data.
- Pillar 2 of 7
Activity
Workouts, steps and zone-2 minutes across the week.
- Pillar 3 of 7
Recovery
Resting heart rate and heart-rate variability (HRV), as you log them.
- Pillar 4 of 7
Nutrition
Protein, water and simple daily eating habits.
- Pillar 5 of 7
Sauna & cold
Sauna and cold: how often and for how long.
- Pillar 6 of 7
Supplements
The supplements you already take. A tick only, no doses and no recommendations.
- Pillar 7 of 7
Lab values
Your lab values against your lab's reference range.
The helix breathes with you
Glowing ends
The ends glow with your streak of days following your protocol.
Orbiting particles
Your zone-2 minutes over the last 7 days, turned into light.
Breathing rhythm
Calmer and slower when your fitness age is below your calendar age.
Frosted glass
A pillar you haven't measured yet. One entry and it starts to glow.
How it works
From 60 seconds to a clear picture
01 Answer 6 questions
Age, height, weight, waist, resting heart rate and how you move. If you don't know something, there is a "don't know" answer.
02 See your fitness age
An educational estimate of your cardiorespiratory fitness, expressed as an age. Approximate inputs are clearly marked.
03 Log in three taps
Sleep, workouts, sauna, lab results. The helix lights up pillar by pillar, and you see lab values against your lab's reference range.
Privacy
Your data stays on your device
The free version runs entirely in your browser. No account, no e-mail, and no server holding your health records.
No sign-up
You start right away. We don't ask for a name, an e-mail or a phone number.
Local storage
Your entries live in this device's browser and are not sent to us.
Your file, your control
Download everything as a file, or delete everything from settings, whenever you like.
Cookie-free statistics
We only count anonymous events such as "test started" or "result shown", never a single value of yours.
Science
Models you can check
Fitness age is calculated with published, peer-reviewed research models. Here is exactly which ones, linked to the original papers.
01 VO₂peak without an exercise test
A HUNT Study (Norway) model: cardiorespiratory capacity from age, waist, resting heart rate and an activity index.
Nes BM et al. Med Sci Sports Exerc. 2011;43(11):2024–2030
Open the paper (DOI)02 The idea of "fitness age"
The age at which your estimated value is typical for healthy people of your sex. The BMI version of the model, used when you answer "don't know" for your waist, comes from here too; the result is then marked as approximate.
Nes BM et al. Med Sci Sports Exerc. 2014;46(6):1159–1165
Open the paper (DOI)03 Reference values by age
Measured VO₂max in 3,816 healthy men and women aged 20–90 (HUNT3).
Loe H et al. PLoS One. 2013;8(5):e64319
Open the paper (DOI)04 Physical activity index
Frequency, intensity and duration of exercise, scored as in the HUNT questionnaire.
Kurtze N et al. Scand J Public Health. 2008;36(1):52–61
Open the paper (DOI)
The habit index is our own: transparent rules over a rolling week, where pillars you haven't measured never count as zero.
Not a medical device and not a substitute for a doctor. Every result is an educational estimate.
Plus
Free stays free. Plus adds more.
Weekly AI coach
A short review of your week with ideas to try. No doses and no medical conclusions.
PDF report
Your values and trends in one tidy document, handy for a conversation with your doctor.
Sync across devices
Optional: the same data on your phone and your computer, hosted in the EU.
Free: the test, the helix, the log and your lab values.
See PlusQuestions
Frequently asked questions
What is fitness age?
An educational estimate of your cardiorespiratory fitness, expressed as an age: the age at which your estimated VO₂peak is typical for healthy people of your sex. It is calculated with the model of Norway's HUNT Study.
Is this a medical test?
No. The app is not a medical device and is not a substitute for a doctor. Results are educational estimates from published research models. For questions about your health, talk to a doctor.
How accurate is the estimate?
The model explains about 60% of the differences in measured VO₂peak (R² 0.61 in men and 0.56 in women), so it is a guide, not a measurement. If you don't know your waist or resting heart rate, the result is marked as approximate.
Where is my data stored?
In your device's browser. The free version does not send your health records to a server. You can download them as a file or delete them at any time from settings.
Do I need to sign up?
No. The test and the app work without an account and without an e-mail. An e-mail is only needed if you choose Plus, for the payment.
What do the helix colours mean?
Each rung is one of seven pillars: sleep, activity, recovery, nutrition, sauna and cold, supplements and lab values. Brightness and thickness show how your habits are going, and frosted glass is a pillar you haven't measured yet.
Can I enter my blood test results?
Yes. You enter the values from your lab's report and see them against its reference range, over time. The app does not interpret results in place of your doctor.
Who is behind yourlongevity.bio?
Heaven Interactive Ltd., company no. 201565871, Bulgaria. Write to us at info@heaven-interactive.com.