Start free. Grow when you're ready.
No credit card required. No minimum contract. All core features available from day one, on every plan.
- Core curriculum library
- Grade-locked content delivery
- Your school's branding
- Stock photo library
- Engagement basics
- 500MB media storage
- Everything in Seed
- Video & audio content
- Push notifications to students
- Advanced analytics
- Stock video library
- 5GB media storage
- Everything in School
- Multi-instructor publishing
- Priority support
- 10GB media storage
Common questions
How does billing work?
Plans are per school and billed through Stripe, here on the website. There's nothing to purchase inside the app itself. Pay monthly, or annually with two months free. There's no minimum contract and you can cancel at any time.
Can we change plans later?
Yes, at any time. Moving up to a bigger plan or to annual billing starts straight away, and the unused part of your current plan is taken off what you pay. Moving down to a smaller plan or to monthly billing starts at the end of the period you have already paid for. Any credit left over pays toward your next bills. See Billing & tiers for how to switch.
Is there a minimum commitment or contract?
No. There is no minimum term. You can upgrade, downgrade, or cancel at any time. The Seed plan is free forever with no credit card required.
What happens if we cancel?
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 cancellation we delete your school's data on request and confirm in writing. See Refunds and cancellation.
What does Priority Support include?
Academy plan schools get a direct line to our team: faster response times, help with content migration, and onboarding guidance when you need it. If something is blocking your school, we treat it as urgent.
What does lifetime mean?
One payment, and your plan is yours for as long as we run C3NTR, including all updates to that plan. Future add-ons and new tiers aren't included, and storage limits still apply. You can add storage at any time.
How long is the lifetime offer available?
Until 30 November 2026. After that, lifetime closes and plans return to monthly and annual billing only.
We already pay for School or Academy. Can we switch?
Yes, while the offer is open. Pay the lifetime price and we'll credit the unused part of your current subscription. Once the offer closes, there's no path to lifetime.
Can a lifetime School move up to Academy later?
While the offer is open, you can move up by paying the difference. After it closes, lifetime plans stay as they are.
Is there a guarantee?
Lifetime comes with a 30-day money-back guarantee. If C3NTR isn't right for your school, write to support@c3ntr.app within 30 days for a full refund.
Still deciding?
Start on the free Seed plan today: your library, your branding, up to 10 students, no card. More questions are answered in the FAQs.