Deeper, calmer sleep
When your nasal passages stay open, breathing is lighter. Fewer awakenings, less fatigue in the morning.
Breathe through your nose.
All night long.
Magnetic support keeps your nasal passages open. We track your breathing and heart rate directly from your nose bridge — so you know exactly how your recovery progresses through the night.
MechanicsNasal opening
DataAll night
AnalysisMouth vs. nose
Weight12 grams
Physiology · Problem
Nasal breathing is the foundation of rest
When the mouth opens during the night, breathing resistance changes and sleep becomes lighter. Flou detects changes in your breathing pattern and shows how your breathing affects your recovery overnight.
The problem: what happens at night?
- Mouth breathing raises your resting heart rate
- Snoring signals narrowed airways
- Fragmented sleep lowers next-day readiness
- Without data you guess — with data you know
The solution: our Flou solution
- Magnetic support physically keeps your passages open
- Sensors measure airflow better than anything else on the market
- The morning report shows your mouth vs. nose breathing ratio
- Data guides you to change your habits
Extremely precise data straight from your nose bridge
Wake up more rested and breathe better
The nose bridge is the anatomically optimal place to measure physiological signals. Our multiple sensors capture more precise data than any wrist- or finger-worn device.
Better recovery
See how your body recovered overnight. Understand when to push yourself and when to rest.
Less snoring
Open airways and snoring insights help you and your partner sleep better.
Know if you breathed through your mouth
Mouth breathing weakens sleep quality. See night by night when you breathed through your nose versus your mouth.
Clear morning report
Easy-to-understand scores: sleep, breathing, readiness and snoring — no technical clutter.
Comfort
We use only biocompatible, medical-grade materials that guarantee comfort every hour of the night.
How it works
Three steps to better sleep
Put it on in the evening
Attach it gently to your nose with magnets. Plug and relax.
Sleep peacefully
The device opens your airways and quietly tracks the night. You don't have to do anything — just sleep.
Wake up smarter
Open the app in the morning: see your sleep score, breathing, recovery and tips for a better night tomorrow.
Nasal Tracker App
Everything important on one screen
The app tells you clearly how your night went. See trends and learn what works best for you.
Readiness
84 / 100
Sleep score
88
Breathing
92%
Oxygen level
97%
Recovery
Perfect
Snoring
12 min
The more you use it, the better you sleep
Your data is the key to your success
Flou doesn't just track your body's signals — it helps you change your habits. As you learn how your nasal airflow and sleep quality correlate, you take back control of your life.
Recognize your needs
The first night gives you a clear picture of your breathing. Learn how your nasal airflow affects your quality of rest.
Achieve deeper rest
Long-term tracking changes your habits. You sleep deeper, wake up fresher, and reach a lasting balance.
Optimize your sleep
As you learn to recognize the patterns of your sleep, the device's mechanical support and real-time data help you find the optimal position.
A wellness device that does not replace medical assessment.
Team
Flou Health. Backed by Aalto Ignite
A Finnish team building better sleep through breathing.
LY
Lasse Ylönen
Hardware · Product development
Aalto University, IT. Product vision, user experience and overall development.
EM
Elias Mäkelä
Software
Aalto University. App, data analysis and user experience.
AV
Allan Vidgren
Strategy · Marketing
University of Turku, Law. Strategy, markets and business development.
FAQ
Frequently asked questions
The device is designed to be light and comfortable for overnight
use. We keep improving it based on user feedback.
A ring measures recovery from your finger. Flou focuses on direct
measurement: it opens your nose, tracks your airflow, and tells you how you slept.
No — it's a wellness device that helps you track sleep and
breathing. If you suspect a health issue, talk to a doctor.
Early Access customers will receive their order once the product
launches. The waitlist determines your place in line.
The Nasal Tracker device (Smart Magnetic Bridge), magnetic adhesive
strips (30 days), a magnetic charging dock, a USB cable, and access to the Nasal Tracker app.