Solo teachers
One teacher, a studio (or a hired hall), and a steady weekly schedule. C3NTR puts your practices, philosophy and history in one place.
For wellness schools
A knowledge home for your breathwork studio.
Techniques, physiology, holding spaces and the work of the breath
→ See a quick tour
Free for up to 30 students
No credit card
UK GDPR · EU (London)
Works offline
Your studio's teaching deserves a home
Practices like Wim Hof, holotropic and pranayama get demonstrated in sessions but rarely written. Contraindications get a quick mention. Integration notes and student feedback sit in the facilitator's head. C3NTR is a quiet place to write it all down once, in your studio's voice.
Who this is for
Studios with multiple teachers
Two or more teachers, several classes a week. C3NTR holds the shared standard so every teacher draws from the same library.
Teacher training programmes
You're training the next generation of teachers. C3NTR holds the curriculum your trainees read: the practices, the philosophy, the lineage.
Built for teachers, not for IT
Your teacher opens the app, taps Edit, and writes the next practice breakdown in plain prose. The next session, students arrive knowing the pattern.
Write directly in the app
Like a notepad. New articles are drafts until you publish, so nothing goes live by mistake.
Mobile-first authoring
Edit on the phone between classes or on the way home. The same library, the same edit screen.
A working library in under an hour
Import the starter template in a few taps. Edit anything that doesn't fit. Publish when ready.
Levels, beginner, intermediate, facilitator training
Content locked by level, in your studio's progression
Tag any article with a minimum level. Beginners see foundations and physiology. Intermediate see deeper practices. Trainees see facilitation skills. The same library, the right view per student.
A glossary of breathwork terminology
Breathwork carries its own language. C3NTR's glossary holds the terms in one place: the names, your studio's translation, and the article each term appears in.
- Prāṇāyāma
- The yogic term for breath-control practices, literally, the extension or restraint of *prāṇa*, the life-force carried in the breath.
- Diaphragm
- The dome-shaped muscle that sits beneath the lungs and drives ordinary breathing, flattening downward on the inhale and relaxing back on the exhale.
- Vagus nerve
- The long nerve that runs from the brainstem down through the neck and chest into the abdomen, carrying signals between the brain and the major internal organs.
- Retention
- A pause in the breath cycle, either at the top of the inhale (full retention) or at the bottom of the exhale (empty retention).
- Box breath
- A balanced four-count pattern: inhale four, hold four, exhale four, hold four, the four equal sides giving the technique its name.
- 4-7-8
- A pattern with a strong calming bias: inhale four counts, hold seven counts, exhale eight counts through softly parted lips.
Workshops, retreats, facilitator training
C3NTR isn't only the library. Schedule the next workshop, post retreat dates, and let students see what's ahead. Announcements land on their Today tab and events sit on the calendar.
Start from our Breathwork template
A working starter with 13 articles, 2 short videos, a 8-terms glossary across 5 tags (Getting Started, The Basics of Breath, Core Techniques, When to Use What, Practising Daily). Import in a few taps, then edit anything that doesn't fit your school. Every article, term and tag is yours from the moment you import.
See the Breathwork template Template source:assets/templates/wellness/breathwork.c3t.md
Inside the app
A look at how the library, articles and grade controls feel in your students' hands.
Plays well with what you already have
Bring your existing practice notes and terminology in with smart Word document import or paste Markdown directly from your studio's archive.
Word documents
Smart import reads headings and turns them into draft articles. You review before anything publishes.
Markdown from any editor
Notion exports, Obsidian notes, Bear, plain .md files. Paste or import.
C3NTR templates
Open .c3t.md format. Schools can share templates with each other without us in the middle.
UK GDPR · DPA 2018
UK GDPR compliant. Hosted in the EU (London).
C3NTR is built around UK data protection law from the ground up. Your school's data sits in the EU on Google Cloud London, the same region we manage from.
UK GDPR + Data Protection Act 2018
Built around UK GDPR Article 6 lawful bases. Subject access requests answered within one calendar month.
Hosted in the EU (London)
Your school's data sits on Google Cloud in the europe-west2 (London) region. No transfer outside the UK or EEA for core operation.
Encrypted in transit
All data is TLS encrypted. Access restricted to personnel with a clear business need.
Account deletion on request
Permanent deletion of personal data and content via in-app or written request.
What C3NTR is, and what it isn't
A library your school owns
Another booking or billing system
Built for how schools actually teach
A generic course builder
Calm, focused reading for students
A feed competing for attention
Start free. Move up when you outgrow it.
Seed
Free forever
Up to 30 students
All core features. No credit card.
Start freeSchool
£39/mo
£32/mo billed annually
Up to 150 students
Push notifications. 1 GB media storage.
Choose SchoolAcademy
£69/mo
£57/mo billed annually
Unlimited students
Multi-instructor publishing. Engagement analytics. 5 GB media storage.
Choose AcademyStudent? Show this to your teacher.
If you practise breathwork and you'd love a quiet library you can return to between sessions, share this page with your teacher. Most studios start on the free Seed plan in under five minutes.
Common questions
Can students only see their level's material?
Yes. Tag any article with a minimum level. Beginners see only foundations. Teachers and senior students see everything.
Does it cover Wim Hof, Holotropic, Pranayama, your method?
C3NTR is lineage neutral. The library is yours to fill: Wim Hof, Holotropic, Pranayama, your method or your own teacher's transmission.
Can my studio customise the breathwork template?
Yes. Every article, practice and term is editable. Add your studio's sequencing, your cueing language and your tradition.
How long does it take to set up?
Most schools have a working library in under an hour. Import the starter template in a few taps, then edit anything that doesn't fit. Starting blank takes a little longer. Allow an hour or two to write your first ten articles. Students can use the app the day you publish.
Do I have to stop using my booking system?
No. C3NTR is a knowledge library for your curriculum, terminology and progressions. Booking, billing and scheduling stay with the tools you already use.
Is there a free plan?
Yes. Seed is free forever for up to 30 students, with no credit card required. Move up to School (£39/mo) or Academy (£69/mo) when you outgrow it.
Other wellness disciplines
Teach a different style? Tell us.
Whether it's a specific breathwork lineage we don't list, or another discipline entirely, drop us a line and we'll add a starter template. In the meantime, the app already works for any structured curriculum, your library starts blank in a few minutes.
Ready to give your breathwork students a knowledge home?
Free for the first 30 students. No credit card. A working library in under an hour.
Start free for your school