Your school.
Your art.
Your centre. The knowledge app for martial arts, dance and music schools.

Get C3NTR for iPhone Get C3NTR for iPad Get C3NTR for Android
Get C3NTR for your phone
QR code that opens c3ntr.app/get

Scan with your phone's camera

Download on the App Store Get it on Google Play
Get early access

Free for up to 10 students. No card needed.

Coming soon to iPhone and Android.

C3NTR’s App Store preview: a school’s library, reading and progress on a phone
For any discipline

One app, shaped by your school.

Three Strokes. One Centre.

Every school has a soul. C3NTR holds it.

Your school is more than a venue. It's a community. C3NTR preserves your values, traditions, and the bond between every teacher and student.

Knowledge grows when it has structure. A clear library guides students through your system, one step at a time, and makes sure nothing is lost between sessions.

Every discipline has a culture. Store your school's philosophy, ethos, and history in a format as enduring as what you teach.

For your school

Made for the way you teach.

Eighty starter templates across ten disciplines. Import one, shape it to your school, and publish the same afternoon. No training course, no IT project.

Martial arts 16 Dance 12 Music 11 Yoga 6 Gymnastics 5 Fitness 7 Performing arts 5 Academic 7 Wellness 5 Creative 6
01

Write the way you teach

A few notes, a photo or a clip, and it reads beautifully without you styling a thing.

02

Bring your own AI

Optional polish from your own Claude or ChatGPT key, in the web portal. You review every draft.

03

Findable from day one

Tag it once and search reaches every article, term and clip on the device.

Don't see your discipline? Tell us what you teach and we'll add a starter template, or browse all disciplines →

Bring in what you already have

Bring your existing notes in with Word or Markdown import. C3NTR is not a booking, payments or student records system and does not connect to one. Keep using the tools you have for those. See what C3NTR works with →

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.

Core Features

Built for the way
structured learning works.

Grade-aware content, on-device search and a library your school owns. Here's the short version.

Grade-locked content

Unlocks when the student is ready. Instructors always see everything.

On-device search

Keyword and semantic. Nothing leaves the phone.

Offline access

The library is there in the training hall, with no signal.

Smart import

Word or Markdown in, draft articles out. You review before publishing.

Your branding

Your logo, colours and tab names. An app that feels like yours.

Instant announcements

Publish once and every student gets a push notification.

Explore all features →
UK GDPR · DPA 2018

UK GDPR compliant. Your school's data is stored in the UK.

Hosted on Google Cloud in London, encrypted in transit, never sold or shared. Search runs on your students' devices; the optional AI writing assistant is a leader-only tool that uses the leader's own key.

How we protect your school's data
Pricing

Start free. Grow when you're ready.

No credit card, no minimum contract. All core features on every plan.

Seed £0 Free forever · 10 students
School £32/mo Billed annually · 100 students
Academy £57/mo Billed annually · unlimited
See pricing

Founding offer: lifetime licences until 30 November 2026.

Roadmap

Built in the open.

The App Store and Google Play launch is being built now, with a ready-made template for every discipline. See what's shipped, then tell us what would help your school next.

View the roadmap
FAQ

Common questions.

Any school or academy with a grade structure. This includes martial arts, dance, gymnastics, music, yoga, and any discipline where structured knowledge is passed from instructor to student.
Yes. Articles are saved as your students browse. Open them once and they stay, no connection needed next time.
You do. All curriculum content, student data, and school materials you upload remain yours. Export or delete everything at any time. Never sold, shared, or used for advertising.
Subscriptions are managed here on the website through Stripe. Paid plans are billed monthly or annually with two months free, with no minimum term. The Seed plan is free forever with no credit card required.
Two opt-in features. Search runs entirely on your device; your curriculum never leaves the phone to be searched. AI writing is optional and uses your own Claude or ChatGPT key: the notes you type go, with your key, straight from your device to the provider you chose (Anthropic or OpenAI, in the United States). Nothing passes through C3NTR, and no student data is involved.
A school leader can download the school's content and member records from School details in the app at any time. You can also ask us for an export, before or after cancelling, and we will provide it within 30 days. After account closure we delete your school's data on request and confirm in writing. Cancellation takes effect at the end of your billing period. See Refunds and cancellation.
All questions →

Already a student? Download the app.

Your school's curriculum, at your grade level, always with you.

Get C3NTR for iPhone Get C3NTR for iPad Get C3NTR for Android
Get C3NTR for your phone
QR code that opens c3ntr.app/get

Scan with your phone's camera

Download on the App Store Get it on Google Play
Get early access

Open the app and enter the phone number your instructor registered you with.

Not on C3NTR yet?

Pick your discipline and copy a tailored message to send to your instructor.

This sends nothing automatically, it just copies a message for you to paste into WhatsApp, email, or however you reach your instructor.

Get started

Two ways to begin.

Start free with the app, or pick a paid plan now and build from there.

Start free

Download the app

Seed plan is free forever for up to 10 students. Create your school space from your phone. No credit card.

Get C3NTR for iPhone Get C3NTR for iPad Get C3NTR for Android
Get C3NTR for your phone
QR code that opens c3ntr.app/get

Scan with your phone's camera

Download on the App Store Get it on Google Play
Get early access
Start on a paid plan

Pay first, then set up

Pick School or Academy, pay on Stripe, then download the app and sign in with the phone number you used at checkout.

See plans