Legal

Privacy Policy

Last updated: 5 March 2026

Back to C3NTR

1. Who We Are

C3NTR is a mobile knowledge platform for martial arts schools, operated by C3NTR ("C3NTR", "we", "us", or "our"). For the purposes of the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018 (DPA 2018), C3NTR is the data controller of personal data collected through this website and the early access programme.

You can contact us regarding data matters at: hello@c3ntr.app

2. What Data We Collect

We may collect and process the following personal data:

  • Full name — provided when you complete the early access form.
  • Phone number — provided when you complete the early access form, used to contact you about your request.
  • Technical data — including your IP address, browser type, operating system, and pages visited, collected automatically via server logs and analytics tools.
  • Communications — any information you include when contacting us by email.

We do not collect payment card details, government identification, or special-category data (as defined in Article 9 UK GDPR) through this website.

3. How We Collect Your Data

  • Directly from you — when you submit the early access form or email us.
  • Automatically — through server logs and, where applicable, analytics cookies when you visit this website. We collect only the minimum data necessary for site operation and improvement.

4. Legal Basis for Processing

We rely on the following lawful bases under UK GDPR Article 6:

  • Legitimate interests (Article 6(1)(f)) — processing your name and phone number to fulfil your early access request and to communicate with you about C3NTR. Our legitimate interest is conducting our business and providing the service you have requested. We have assessed this against your rights and interests and consider it appropriate.
  • Consent (Article 6(1)(a)) — where we use non-essential cookies or analytical tracking, we rely on your explicit consent, which you may withdraw at any time.
  • Legal obligation (Article 6(1)(c)) — where we are required to retain or disclose data to comply with applicable law.

5. How We Use Your Data

  • To respond to and fulfil your early access request.
  • To send you updates about C3NTR's development, launch timeline, and related news (you may opt out at any time).
  • To improve this website and our service through aggregated, anonymised analytics.
  • To comply with legal obligations and respond to lawful requests from authorities.

We will not use your data for automated decision-making or profiling as defined in UK GDPR Article 22.

6. Data Sharing & Third-Party Processors

We share your personal data only with trusted third-party processors who act on our instructions and are bound by data processing agreements:

  • Google LLC / Firebase — our primary platform provider. Form submissions are processed by a Firebase Cloud Function hosted in europe-west2 (London) and stored in Cloud Firestore within the same region. Email notifications are delivered via Gmail (Google Workspace). Processing occurs within the UK / EEA. See Google's Privacy Policy and Firebase Privacy.

We do not sell, rent, or trade your personal data to any third party for their own marketing purposes.

7. International Data Transfers

Personal data collected through the early access form is processed and stored within the United Kingdom / European Economic Area (Google Cloud region europe-west2, London). No transfer outside the UK/EEA is required for core form processing. Where any ancillary Google infrastructure operates outside these regions, Google's EU Standard Contractual Clauses and UK International Data Transfer Addendum apply. You may request details by contacting us at hello@c3ntr.app.

8. Data Retention

We retain personal data collected through the early access form for up to 2 years from the date of collection, or until you request deletion, whichever is sooner. After this period, data is securely deleted or anonymised.

Technical data (server logs) is retained for up to 90 days for security and diagnostic purposes.

9. Your Rights Under UK GDPR & DPA 2018

As a data subject in the United Kingdom, you have the following rights:

  • Right of access (Article 15) — request a copy of the personal data we hold about you.
  • Right to rectification (Article 16) — request correction of inaccurate or incomplete data.
  • Right to erasure (Article 17) — request deletion of your personal data ("right to be forgotten"), subject to our legal obligations.
  • Right to restriction (Article 18) — request that we limit how we use your data in certain circumstances.
  • Right to data portability (Article 20) — receive your data in a structured, machine-readable format where technically feasible.
  • Right to object (Article 21) — object to processing based on legitimate interests, including for direct marketing purposes.
  • Right to withdraw consent — where processing is based on consent, you may withdraw it at any time without affecting the lawfulness of prior processing.

To exercise any of these rights, contact us at hello@c3ntr.app. We will respond within one calendar month, as required by UK GDPR Article 12. There is no charge for most requests.

10. Cookies

This website may use strictly necessary cookies required for basic site operation. We do not currently deploy advertising or social-media tracking cookies. If we introduce optional analytics cookies in the future, we will present a consent notice and update this policy accordingly.

11. Security

We implement appropriate technical and organisational measures to protect your personal data against accidental loss, unauthorised access, disclosure, alteration, or destruction. All data in transit is encrypted using TLS. Access to personal data is restricted to personnel with a legitimate business need.

No transmission over the internet is completely secure. While we take all reasonable steps to protect your data, we cannot guarantee absolute security.

12. Supervisory Authority & Complaints

If you believe we have handled your personal data unlawfully, you have the right to lodge a complaint with the Information Commissioner's Office (ICO), the UK supervisory authority for data protection matters:

  • Website: ico.org.uk
  • Helpline: 0303 123 1113
  • Address: Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF

We would, however, appreciate the opportunity to address your concern directly before you contact the ICO.

13. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, legal obligations, or the services we offer. When we make material changes, we will update the "Last updated" date at the top of this page. We encourage you to review this policy periodically.

14. Contact Us

For any questions, requests, or concerns regarding this Privacy Policy or the handling of your personal data, please contact us: