Independent gyms
One head coach, an assistant or two, and a steady group of gymnasts. C3NTR puts your skills, conditioning and safety notes in one place. No second tool, no spreadsheet.
For gymnastics schools
A knowledge home for your acrobatics school.
Balance, partner skills, dynamic work and the safety of progression
→ See a quick tour
Free for up to 30 students
No credit card
UK GDPR · EU (London)
Works offline
Your gym's curriculum deserves a home
Partner balance progressions get demonstrated and corrected on the floor. Safety responsibilities of the base and flyer get reintroduced each squad. Conditioning blocks live in the coach's head. C3NTR is a quiet place to write it all down once, in your gym's voice.
Who this is for
Gyms with multiple coaches
Two or more coaches, several squads. C3NTR holds the shared standard so every session draws from the same library.
Competition gyms
Compulsory, optional or elite. Content locked by level keeps newer gymnasts safe on foundations while elite athletes see the full repertoire.
Built for teachers, not for IT
Your head coach opens the app, taps Edit, and writes the next balance progression in plain prose. The next session, both partners arrive knowing the cue.
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.
Partner levels, FIG age groups or your gym's progression
Content locked by level, in your gym's progression
Tag any article with a minimum level. New acrobats see basic balances. Intermediate see dynamic skills. Senior pairs see competition skills. The same library, the right view per gymnast.
A glossary of gymnastics terminology
Gymnastics carries a precise vocabulary across apparatus and skills. C3NTR's glossary holds the terms in one place: the skill names, your gym's preferred cues, and the article each term appears in.
- Base
- The acrobat who supports, lifts and holds the top. In most balances and dynamics, the base is the stable foundation that the skill is built on.
- Top
- The acrobat who is lifted, balanced or thrown. The top works above the base, holding shapes and landing safely.
- Balance
- A held acrobatic shape where one or more people are supported in a still position, a human tower, a lift, a supported handstand or similar.
- Dynamic
- An acrobatic skill involving movement and flight, a throw, a catch, or a skill where the top leaves the base's hands and travels through the air before being caught or landing.
- Spotter
- A trained person, usually the coach, who stands ready to assist or catch during a skill, particularly a new or developing one.
- Planche
- A horizontal body hold where the acrobat is supported above the base with the body straight and parallel to the ground, arms extended.
Competitions, gradings, conditioning blocks
C3NTR isn't only the library. Schedule the next competition, post conditioning blocks, and let pairs see what's ahead. Announcements land on their Today tab and events sit on the calendar.
Start from our Acrobatics template
A working starter with 15 articles, 2 short videos, a 8-terms glossary across 5 tags (Getting Started, Foundations, Practice, Progression, Resources). 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 Acrobatics template Template source:assets/templates/gymnastics/acrobatics.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 routines and conditioning plans in with smart Word document import or paste Markdown directly from your coaches' notes.
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 AcademyGymnast? Show this to your coach.
If you train at a acrobatics gym and you'd love a quiet library you can return to between sessions, share this page with your coach. Most gyms start on the free Seed plan in under five minutes.
Common questions
Can gymnasts only see their level's material?
Yes. Tag any article with a minimum level. Newer gymnasts see only foundations. Coaches see everything, including safety progressions for higher skills.
Does it cover FIG Acrobatic Gymnastics, IFSA, your federation?
C3NTR is body neutral. FIG Acrobatic Gymnastics, IFSA and other governing bodies can adapt the syllabus without rewriting.
Can my gym customise the acrobatics template?
Yes. Every skill, drill and tag is editable. Add your gym's progressions, your conditioning blocks and your house standards.
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 gymnastics disciplines
Teach a different style? Tell us.
Whether it's a specific acrobatics 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 acrobatics 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