MEDICAL-GRADE INSIGHTS
You take care of yourself, but some signs of wear on your body stay invisible. Vitro reveals the poor recovery, the drop in heart rate variability and the silent stress that accelerate aging, long before the first symptoms appear.
CELLULAR RECOVERY
Optimize your body's ability to recover, recharge and fight cellular aging.
EARLY DETECTION
Identify health imbalances early and act before they become serious.
BIOLOGICAL LONGEVITY
Build the habits that keep you stronger, sharper and healthier for decades to come.
Your heart rate variability reveals the real state of your autonomic nervous system. The higher it is, the better your body handles stress, recovers and preserves its energy over time.
Track how your energy evolves over 24 hours, 7 days and 30 days. Spot the habits that build your vitality, and the ones that quietly drain it. So you can move through the years keeping your strength, your clarity and your drive.
By continuously tracking your biometric data, heart rate, blood oxygen, respiratory rate, cardiac load, Vitro helps you observe the physiological shifts that could signal an imbalance. So you can act early, and with real understanding.
Fitmo's medical advisors guide what we measure, how the app explains it, and what every number is worth. Their combined clinical expertise makes it easier for hundreds of thousands of people to understand what their body is actually doing.
Board-certified
25+ years experience in a medical specialty
Industry innovations
40+ published studies in medical journals
Clinical oversight
They defined what every score on your Vitro means
Dr. Melynda Barnes, MD
Chief Medical Officer
Triple board-certified Obesity Medicine, Facial Plastic and Reconstructive Surgeon, and Otolaryngologist
Stanford University
Yale Medical Group's Board of Directors
Dr. Raoul Manalac, MD
Senior Director, Clinical Strategy
Board-certified Internal Medicine Physician
Johns Hopkins University
American Board of Obesity Medicine
Dr. Nitin Vaswani, MD MPH MBA
Director, Clinical Strategy
General Surgeon and Clinical Pathologist trainee
Johns Hopkins University
University of PennsylvaniaVitro shows you what's happening inside your body, not just how many steps you took.
VITRO
THE OTHERS
Most trackers recap what you did yesterday.
Vitro observes what's happening inside your body before you feel it.
An HRV shift that's settling in.
A drop in overnight SpO2.
Deep sleep quietly getting shorter.
VITRO:
"Vitro spots the invisible imbalances before your body sounds the alarm."
THE OTHERS:
"They count steps. They measure calories. They ignore the faint signals."
Vitro is built to anticipate, not to recap.
VITRO:
One-time purchase. Free app for life. All your data accessible, exportable, and truly yours.
THE OTHERS:
€6 to €30 per month, just to see your own data.
We believe your health data should never be locked behind a subscription. With Vitro, you own the band, and you own your data. Forever.
VITRO:
HRV, ECG, SpO2, deep sleep, recovery, stress, and 24-hour cardiovascular trends.
THE OTHERS:
Steps, calories, basic sleep. HRV only on a premium subscription.
Vitro gives you the full picture, and shows you how your body really changes over time.
Other bands estimate your health from a handful of averages.
Vitro observes continuously, 24 hours a day.
An AI built into the app analyzes your data and tells you plainly where you stand, what to work on, and what the signals your body sends actually mean.
Estimates are useful.
But continuous observation is powerful.
Powered by AI and machine learning, our app is a richer health experience that helps everyone build routines that create a virtuous circle.
Understand how your daily habits affect your longevity, and get health reports built on your own data, for a truly holistic approach to your health.
Track your data and get guidance to sustain your endurance, speed up your recovery and build resilience as you age, like a blade that sharpens with time instead of dulling.
We continuously analyze your biometric data to catch the early signals of stress, weakened immunity, declining heart rate variability and slowed recovery, so you can act before illness sets in.
No more guesswork. Run personalized analyses every day and every week, backed by cutting-edge science, to optimize your health, slow aging and extend your longevity.
Limited to 2 units per customer
Every Vitro is calibrated by hand by our technicians, so production runs are deliberately kept small.
Understand your body's signals.
Vitro reveals the health trends you can't feel yet, showing you how each habit shapes your future. Our app gives you clear reference points to extend your energy, your resilience and your longevity.
30-day money-back guarantee
Free worldwide shipping
Free app for life
Ships before
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Try Vitro at your own pace. If the band isn't right for you, send it back and we'll refund you, no questions asked.
"For my patients aged 50 and over who want to understand their body without waiting for symptoms, Vitro is the tool I recommend."
"It doesn't replace medical care, but it surfaces trends that even an annual check-up won't reveal. Some patients adjusted their sleep, their stress, their recovery. Within a few weeks, they felt more present, sharper, more available for their family."
Spot the signs of fatigue, invisible stress or insufficient recovery before they settle in for good. Vitro helps you anticipate, not react.
The years that count aren't the ones you live, but the ones where you're fully present. Sleep, recovery, stress, heart rate variability, these are the real indicators of who you'll be in 10 years.
Vitro continuously measures your essential data (heart rate, HRV, SpO₂, stress, sleep), 24/7, without interrupting you. You check your data whenever you want.
Your fatigue has a cause. Vitro helps you find it before it becomes a limit in your daily life.
The vibrating alarm eases you out of sleep at the optimal point in your cycle. You start the day rested, not jolted awake.
The Fitmo app turns complex measurements into simple, actionable indicators. You understand what's happening, no physiology degree required.
Vitro packs multi-LED biometric sensors (4 LEDs and 3 photodiodes) to continuously measure your essential health data. The app analyzes it to give you a clear view of your physiological state, day after day.
From this data, the Fitmo app helps you visualize your trends over several weeks, identify what wears your body down and what restores it, and adjust your habits to age better, simply.
Vitro sits comfortably on your wrist, 24/7, without getting in the way. It automatically measures your essential data: sleep, recovery, stress, heart rate, HRV, blood oxygen and more.
Open the app to understand what's happening inside your body. Your indicators are laid out clearly, without information overload, so you can make better decisions day to day.
Week after week, the trends reveal what restores you and what wears you down. You no longer just endure your body. You understand it.
Every adjustment counts. Every night you recover better, every signal you catch in time. That's energy preserved. Time gained to be there, fully, for the people you love.
"I'm really not comfortable with technology. But here, you put the band on, open the app, and everything is clear. Within 5 minutes I'd understood my sleep data."
Martine L., verified customerThe Fitmo app is free for life for every Vitro owner. Works on iOS and Android, no subscription, no hidden features.
Check your data whenever you want, with no intrusive notifications and no pressure. You get access to all your biometric data: heart rate variability, sleep, stress, recovery, blood oxygen, plus your monthly and yearly trends.
Simple setup: everything is guided in the box. You'll find a clear step-by-step guide, plus QR codes and direct links to download the app and finish setup in a few minutes.
Vitro was created for the people who feel fatigue, stress or shifts in energy without understanding why.
Thanks to its biometric sensors, Vitro helps you identify your body's signals before imbalances settle in.
Not to judge you, or push you to perform. Just to give you a clear view of what shapes your health, day after day.
Longevity means living longer in good health, not just living older. Vitro helps you:
Vitro gives you a clear view of what shapes your health, day after day, so you can adjust your habits at your own pace and without pressure.
No, never. Vitro works entirely without a subscription. You buy your band once for €189 and you access all your data for life through the free app. No hidden fees, no monthly charge, no feature locked behind a paywall.
Vitro is built to handle sweat, splashes and hand washing day to day. We do recommend removing it before showering, bathing or swimming.
In practice, you charge it twice a month and forget it's on your wrist the rest of the time.
When your Vitro arrives, you'll find:
*Offer valid while stocks last.
Yes, Vitro works with iOS and Android. The Fitmo app is a free download on the App Store and Google Play. Setup takes a few minutes and is fully guided by the QR codes and links included in the box.
Yes. Fitmo is a French brand and your data is:
We never sell your data and never share it with any commercial third party.
Your review is being checked by our team.
It will be published very soon.
Also at Fitmo
Tetra brings the essentials of the Vitro, no screen and no subscription, in a band you wear like a piece of jewelry. Sleep and its stages, heart, stress and recovery, on your wrist day and night.
Discover Tetra
You pay once, €189, and that's it. No subscription, no monthly charge, no feature locked behind a paywall.
For comparison, a leading smart ring runs about €349 plus €5.99 a month. Over three years, that's about €565.
Vitro tracks 13 measurements around the clock, including an ECG and your body composition, and lasts 10 to 15 days on a charge. You have 30 days to decide if it's worth it to you.
Vitro records what's happening in your body while you live your life: heart rate and its variability, blood oxygen, stress and recovery, sleep stages, body temperature, activity, and your blood pressure and blood sugar trends.
Two measurements ask for a moment of your attention: the ECG and your body composition. You place a finger on the metal bar and stay still until it's done. Everything else records on its own.
Gadgets end up in a drawer because they're a chore. Vitro has no screen, no stream of notifications, and needs a charge about twice a month.
Good instinct, and fair to ask. Fitmo is a French brand, and more than 100,000 customers already wear our products.
You're on our official store. Your payment goes through a secure checkout, and your Vitro is covered by our 30-day money-back guarantee and a 2-year warranty.
If you have a question before ordering, ask us in the chat on this page.
Because of the night. An Apple Watch needs charging about every day, so it often spends the night on the charger, right when your heart and your sleep have the most to say. Vitro lasts 10 to 15 days on a charge, so it stays on your wrist in bed.
It also adds your body composition and your blood sugar trends, with no screen lighting up at 3 a.m.
Because a checkup is one snapshot, taken on one morning, sitting in a quiet office. What you feel happens on the other days, and often at night.
Vitro records those days: your heart rate, your sleep, your stress, week after week. So the next time you hear "everything looks normal", you walk in with weeks of trends instead of a feeling, and your doctor has something real to look at.
Vitro follows your blood pressure trends and your blood sugar trends: the direction they take, week after week, so you can see what's changing between two appointments. These are estimates, made to be followed over time.
For an exact reading on a given morning, your cuff and your meter are the right tools. Vitro shows you the weeks in between, the part nobody else is watching.
No, never. You buy Vitro once, and the app is free for life, with every feature and all of your data.
No hidden fee, no premium tier, nothing locked behind a paywall. Your data belongs to you.
Vitro handles sweat, splashes and hand washing every day. Take it off for the shower, the bath or the pool, and put it back on right after.
With 10 to 15 days of battery, that's about the only time it leaves your wrist.
Your first night shows up the very next morning: how long you slept, and your deep, light and REM sleep.
Your trends take longer, and that's normal: about 30 days for a real picture of how your body is doing. Which is exactly how long you have to try it.
You have 30 days from delivery to try it. If Vitro isn't for you, write to us and tell us what didn't work. We'll make it right, up to a full refund.
On top of that, your Vitro is covered by a 2-year warranty.
That's the idea. Vitro looks like a simple fabric band: no screen, nothing to fiddle with, and a second silicone sport band in the box. He charges it about twice a month and forgets it's there.
And every morning, the app tells him where he stands: his sleep, his heart, his recovery.
Tetra is a piece of jewelry: a crystal-set bracelet that stays on in the shower, lasts 5 days and adds cycle tracking.
Vitro is a plain band that goes further on measurements: ECG, body composition, body temperature and blood sugar trends, with 10 to 15 days of battery. You take it off for the shower.
Both track your heart, your sleep, your stress and your blood pressure trends, with no subscription.
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