OSiAN, AI Vitality Mentor

Meet your AI Vitality Mentor.

OSiAN connects your wearables, your health data, and 10,000+ peer-reviewed studies. Every morning, your mentor turns that into one thing: a clear, personalized plan for today.

With individual focus on Longevity — Performance — Wellbeing.

71 in 100 want better health and don’t get there.*

Most of us know what is good for us. OSiAN helps you fit it into the week you actually have, around work, family and training, and adjusts your plan each morning to how you slept and how you feel.

You have the data. Nobody tells you what it means.

Your wearable tracks your HRV. Your blood panel flags your Ferritin. Every app adds another score.

Each number asks for your attention, and none of them tells you what to do about it. You still don’t know what to take, when to push or when to rest, and every new metric adds one more thing to work through.

OSiAN sorts through all of it and shows you only what matters today.

Perform, feel and thrive,
this year and in the years ahead.

Join the waitlist →

Active every day. Not just at onboarding.

Most health apps set you up once and leave you alone. Your body changes daily. So does your guidance.

1

Connect your data

Wearables, lab results, your profile, your goals. A complete picture of you, not a template.

2

Your mentor gets to work

Each night it reads your data against your profile and 10,000+ studies. The result is specific, actionable and yours.

3

It learns. Your plan adapts.

It tracks what works and adjusts. Your guidance evolves as your body does.

Setting up the OSiAN app before a session

Choose your focus: Longevity, Performance or Wellbeing.

OSiAN has three modes, one for each of these goals. You choose the one you want to work towards, and the app tailors itself to it: your daily plan, the guidance you get and the numbers your mentor keeps an eye on.

  • You choose one focus. During setup, based on the goal you want to reach right now.
  • The app tailors itself to it. Plan, guidance and check-ins are built around that one goal.
  • Switch whenever your goal changes. Your data stays, and the plan adjusts to the new focus.
Longevity focus

Build habits that last.

Right for you if you think

“I want to still be doing this in thirty years.”

Your plan centres on nutrition and supplement guidance based on your data and current research.

OSiAN app: setting your main goal during onboarding
A day in Longevity focus

Your mentor noticed a change in your iron marker.

Your ferritin is lower than at your last test. OSiAN shows you what current research says about iron-rich foods and timing, and suggests talking it through with a healthcare professional.

Your plan focuses on

Biomarker Overview Trend Tracking Nutrition Timing Ingredient Science
Performance focus

Train smarter, not harder.

Right for you if you think

“I have a number I want to hit.”

Your plan adapts every morning to your HRV, sleep and training load.

OSiAN app: a conversation about nutrition before a run
A day in Performance focus

06:47, your mentor already has a plan.

Before you reach for your phone, OSiAN has read last night’s HRV, sleep quality, and training load, so you start the day with clarity.

Your plan focuses on

HRV Analysis Sleep Quality Training Load Recovery Score
Wellbeing focus

Feel grounded, every day.

Right for you if you think

“I want to feel good in an ordinary week.”

Your plan follows your recovery, mood and daily rhythm, tuned to what your body is telling you.

OSiAN app: monthly activity, weekly activity and today’s metrics
A day in Wellbeing focus

Recovery score: 61. Today calls for ease.

Your mentor adapts your plan to what your body is telling you right now, guiding you toward rest, mobility, or active recovery as the day requires.

Your plan focuses on

Adaptive Plans Sleep Quality Load Management Recovery Protocols

Built by people who use it themselves.

What we measure, and what it looks like on the days you have no capacity to figure any of it out.

Alexandra Huber One less thing to figure out
Christian Beyer What we measure, and why it matters
Patrick Koller What to actually do with your data

10,000+ peer-reviewed studies sit behind every recommendation. Collecting data is the easy part. Knowing what to change tomorrow is not.

Join the waitlist →

A marketplace nobody can buy
their way into.

The marketplace holds supplements, diagnostics, clinics and practitioners. Your mentor draws on it only when your own numbers point at something specific.

Every product passes the advisory board before it can appear, and every brand in a category pays the same flat referral fee, so spending more buys no visibility. Without that rule a recommendation would just be an advert with better manners.

Every app shows you the number. Then comes the question: what do I do with it?

OSiAN answers that question every morning, with one step you can take and the reason behind it.

Products

Supplements, formulations, devices. Judged on ingredient logic, dosage, bioavailability and your own context.

Diagnostics

Which test is worth doing, when, and where to have it done. And which one is not worth your money.

Places

Longevity centres, clinics, studios, gyms. Reviewed on what they deliver, not on what they advertise.

People

Nutritionists, therapists, trainers, physicians. Matched to your situation rather than to a partner list.

7:04
OSiAN Today

Slept badly three nights in a row.

OSiAN

Your bedtime moved 70 minutes later this week. Lights out at 22:30 tonight, screens off from 22:00. We will look at the next three nights together.

Flying to Singapore on Thursday.

OSiAN

Move bedtime forward by an hour starting tonight. Bright light at seven in the morning, none after nine at night. You will land closer to their time than yours.

Every product is reviewed by named experts in medicine and sport science before it can appear in your recommendations.

They check formulation, dosage and the evidence behind the claim, and they see the commercial terms alongside it. Take that review away and there is no reason for us to exist.

  1. 01
    SG

    Dr. Sarah Girstmair

    Medical

    General practitioner and emergency physician, trained in functional and nutritional medicine. Micronutrients, the gut, and where testing stops being useful.

  2. 02

    Patrick Koller

    Sport science

    Sport scientist and ski-cross athlete at two Olympic Games. Trains elite athletes, and programmes recovery as seriously as training.

  3. 03
    KA

    Kurt Aeschbacher

    Partner

    Nearly four decades on Swiss television and Switzerland’s first UNICEF ambassador. Co-hosts a longevity podcast now in its third season.

“
For the first time I actually understand why I’m taking what I’m taking.

Marco, 38, endurance athlete

“
It feels like having a recovery coach and a training coach in one app, and neither of them is trying to sell me something.

Sophie, 44, executive

Oisín (OSH-EEN) was a warrior and a poet in Irish legend, and his name means little deer. He was taken to Tír na nÓg, where nobody grows old. Three years there were three hundred at home. He asked to go back anyway.

Youth is precious because it fades. That trade is still on offer, in smaller pieces: an hour in the data, a weekend on protocols, attention that used to go somewhere else.

You didn’t start tracking your sleep to become an analyst. You started because you wanted to feel better.

OSiAN does the work. You get the day.

The OSiAN deer

We’re here to help.

Every morning, OSiAN reads your overnight wearable data, HRV, sleep stages, training load, readiness score, and cross-references it with your health profile and our science database. The result is a clear, personalized daily plan: whether to push or rest, what to eat, what to supplement, and why. It updates as your body changes.
Your wearable’s app shows you what your body is doing. OSiAN adds one clear step a day, plus suggestions for supplements, tests, clinics and nutritionists that fit your situation, chosen by rules no brand can pay to change.
Through subscriptions, and a flat referral fee that is the same for every partner in a category. If one provider could pay more than another, the recommendation would stop being a recommendation.
OSiAN connects to your wearable and reads the data it already collects, such as sleep, HRV and training load. You can also use OSiAN without a wearable. Your health profile and manual inputs alone are enough to get meaningful guidance.
The rules are built into the system. Our recommendation engine runs on ingredient logic, formulation quality, and your personal data. Brands cannot pay to be recommended, cannot influence rankings, and cannot push products. Every brand in our ecosystem passes advisory board review. Commercial participation is completely separated from guidance.
No. OSiAN is a wellbeing and performance app. It does not diagnose, treat or prevent any disease, and its suggestions are general information for healthy adults. For symptoms, lab results outside the reference range or questions about medication, please speak to a qualified healthcare professional.
We’re in beta development, going live Q4 2026. Join the waitlist to be among the first, and to receive science-backed vitality insights in the meantime.

That feeling
when your mornings
finally make sense.

OSiAN reads your overnight sleep, HRV and training load against your profile, shows you what changed since yesterday, and gives you one step for today.

The beta goes live in Q4 2026. Everyone on the list gets access first and receives our science briefings until then.

The OSiAN app on a phone

* 84% call health a top priority, 13% reach their goals (Germany: 28%). McKinsey & Company, The Future of Wellness 2026, 9,000+ consumers in the UK, Germany, China and the US.

OSiAN is a wellbeing and performance app, not a medical device. It does not diagnose, treat or prevent disease and does not replace medical advice. Food supplements are no substitute for a varied, balanced diet and a healthy lifestyle.

Contact
+43 664 18 23 926
contact@osian.health
osian.health

© 2026 OSiAN. All rights reserved.

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