Patterns, History, Settings, Recommendations — everything on your wrist.
19 breathing patterns, felt through the Taptic Engine — eyes closed, no screen.
Afterwards you see how you breathed.
Now in closed beta · testers & breath-coach partners welcome
Haptic pulses rise for inhale, fall for exhale.
Close your eyes. Just feel.
Holding your breath during Tummo? Double Tap ends the retention.
Eyes stay closed. Fingers decide.
The App
Just like on the Watch — swipe left and right to explore.
Go deeper
From calm to fire. Where a study exists, it is named in the app — with what it tested.
Tummo burns orange. Coherence glows green. You feel the difference before you see it.
Build your own breathing pattern. Name it. Use Tummo as base. Make it yours.
Your breathwork on your wrist.
The details where you can actually read them.
Your body
CARLON keeps a record of every session — the rhythm on your wrist, the details on your iPhone.
See how your heart rate moves through each breath hold — on your wrist.
The target rhythm beside your session. Breath by breath with breathing detection or a chest strap.
Every round, every hold time recorded — compare them across sessions.
Your heart rate across the whole session — phase by phase.
HRV in the context of your own range — and the signal behind every suggestion.
30-session trend and personal bests — your practice over time.
The science
Every pattern explained. Where research exists, the source sits beside the practice — and what it did and did not test.
Every pattern explained — how it is done, where it comes from, which studies examined it.
HRV today, 7-day trends and your sessions at a glance.
CARLON doesn't just measure — it teaches. Every metric explained in context.
For coaches & trainers
Build a pattern for a client's evening wind-down — set the phases, the rounds, the recovery, your colour, your name. Send it as a file or a link. They open it in CARLON and follow your rhythm on their Watch, eyes closed.

A 6-key timeline to compose any pattern.
Phases, rounds, recovery, your colour, your coach note.
Send a file or a link — clients open your pattern in CARLON with one tap.
Clients export a session, you import it into your coach view.
Sources and safety notes for every pattern, for your clients.
Early access · help shape the coach tools · founding-partner recognition
For researchers
Connect a Polar H10 or Movesense straight to your Watch — no iPhone in between. The optional CARLON Cockpit records beat-to-beat intervals, artifact-filtered, with the signal source always named. Every session exportable, methodology included.

Beat-to-beat RR straight to the Watch, artifact filter, signal source named.
Heart rate on your wrist as you breathe; with a chest strap, the beat-by-beat trace.
Established physiology, sources named, limits stated — no promise of an effect.
With a chest strap (CARLON Cockpit): RMSSD, Poincaré SD1/SD2, DFA-α1, RSA, Baevsky index.
JSON / CSV / Markdown with methodology + SHA-256 integrity.
A wellness product, not a medical device. Not intended to diagnose, treat, cure or prevent any disease.
Origin
Jan & Carina · Founders of Vitalkultur
When our son Carlon was born on a January night in 2026, breathwork became more than a technique — it became the way we stayed grounded together.
We wanted an app that feels the way breathing feels. So we built one during night shifts — testing haptic pattern after haptic pattern until each breath had its own rhythm.
One night, the family was asleep. I put CARLON on the lowest haptic level — barely there, just a whisper on my wrist. Coherence breathing, 5.5 breaths per minute. The vibration was so subtle that I had to listen for it. And that's exactly what pulled me out of my head. No thoughts about code. No plans for tomorrow. Just the faintest pulse, rising for inhale, falling for exhale. I fell asleep mid-session.
That was the moment I knew we were on the right track. Not because of the data — but because I stopped thinking and started breathing. Named after our son, because freedom is in every breath.
The beta
Full access for a small group of selected testers — before CARLON goes public.
Currently in closed beta · we reply personally
Questions
CARLON is in closed beta. Tell us a little about you and we'll send an invite — we read and reply to every message personally.
Or just write us: jan@vitalkultur.com