Personalized health intelligence

Stop guessing. Start understanding.

Xerno turns your wearable and health data into clear, evidence-informed decisions for recovery, training, and everyday health.

Works with Apple Health
9:41Xerno
TODAY
Good morning, Daniel
D
Tuesday, July 2118°
This morning
Low confidence

Light movement today.

Sleep ran 1h 12m under your baseline and HRV is down 8%, so today favours an easier, recovery-focused effort.

Ask Xerno
Why today?
See what's behind today's plan
TODAY’S PLAN
Recovery
•  Prioritise a full night's sleep.•  Skip alcohol this evening.
Train
•  Mobility or an easy walk.•  Nothing that feels like strain.
Fuel
•  Keep protein high at each meal.•  Whole foods and steady meals.
Daily check-in
How do you feel today?
😣😕😐🙂😄
Today
Noticed
History
Profile

The problem

More data has not created more clarity.

Sleep scores. Readiness scores. HRV, resting heart rate, training load. You are measured constantly, yet still left to guess what any of it means today.

“Wearables are excellent at measuring. They are less useful at reasoning.”

You should not need five dashboards to decide whether to train, recover, or change your routine.

How it works

From raw signals to a reasoned plan.

01

Learn

Xerno learns your personal baseline from your wearable and health data.

02

Reason

It weighs your signals against context and evidence, instead of reacting to a single metric.

03

Guide

It gives you one clear recommendation for today, and explains why.

Product

A clear read on your day.

Three views, one coherent picture.

9:41Xerno
TODAY
Good morning, Daniel
D
Tuesday, July 2118°
This morning
Low confidence

Light movement today.

Sleep ran 1h 12m under your baseline and HRV is down 8%, so today favours an easier, recovery-focused effort.

Ask Xerno
Why today?
See what's behind today's plan
TODAY’S PLAN
Recovery
•  Prioritise a full night's sleep.•  Skip alcohol this evening.
Train
•  Mobility or an easy walk.•  Nothing that feels like strain.
Fuel
•  Keep protein high at each meal.•  Whole foods and steady meals.
Daily check-in
How do you feel today?
😣😕😐🙂😄
Today
Noticed
History
Profile

Today

Your day, decided

One clear recommendation for recovery, training, and fuel, with the reasoning a tap away.

9:41Xerno
Noticed
What Xerno has learned about you
and how it’s evolving.
AllBodyLifestyleEnvironmentMind
NEW THIS WEEK
Sleep consistency and next-day recoveryNew
Going to bed within the same hour tracks with a better morning read.
Seen on 9 of your days
PATTERNS BECOMING STRONGER
Late caffeine and deep sleep
Caffeine after 2pm shows up as less deep sleep that night.
Growing stronger
Hard sessions and next-morning HRV
Your HRV tends to sit lower the morning after a hard session.
Growing stronger
Today
Noticed
History
Profile

Noticed

What Xerno has learned

Patterns found in your own days, sorted by how firmly they hold and what is still under review.

9:41Xerno
Why today?
Here’s how I built today’s plan
I look at what matters, set aside what doesn’t, and weight everything to decide.
1. WHAT I SAW
Sleep 1h 12m under baseline
HRV down 8% on your average
2. WHAT I DISCOUNTED
Resting heart rate, after a late meal
3. HOW I WEIGHED IT
Counted in full (2)
Set aside (1)
Today
Noticed
History
Profile

Why today?

The reasoning, in full

What Xerno saw, what it set aside, and how it weighed the rest, as a numbered account.

Product examples for illustration only. Xerno does not provide medical diagnosis.

The difference

Not another score.

Context over isolated metrics

Xerno evaluates patterns rather than treating one number as truth.

Explanations over commands

Every recommendation shows the reasoning behind it.

Learning over generic advice

The system adapts as it observes how your body responds over time.

Our story

Built from a personal obsession with what actually works.

Recently, I lost 20 kilograms in under a year. Getting there meant tracking everything, and I became obsessed with what actually works.

The apps I tried gave me measurements, not reasoning, and advice that worked for one person often failed for another. I built Xerno to learn how an individual body responds, and to explain why.

Anastasia Larionova

Founder, Xerno

Trust

Built for calibrated trust.

Evidence-informed

Recommendations are grounded in scientific evidence, not trends.

Clear explanations

You always see the reasoning behind a suggestion.

Confidence and uncertainty

Xerno shows how confident it is instead of pretending to be certain.

Privacy-conscious by design

Your health data is treated as sensitive from the first byte.

No diagnosis claims

Xerno is a wellness product, not a medical device.

No engagement tricks

No streaks or manipulation, only guidance you can use.

Xerno is a wellness product and does not provide medical diagnosis, treatment, or emergency guidance.

Join the waitlist

Join the first group shaping Xerno.

Xerno is in early development. Early testers help define the first public release, and get access before anyone else.

Currently accepting early testers.

By joining, you agree to receive occasional product updates from Xerno. No spam.