Last updated: May 2026
Sole proprietor: Christopher Jeanne EI, operating under the trade name CMJ Group and the verbal trademark Kreyolang
SIREN: 879 333 664
Address: 47, rue Vivienne – 75002 Paris, France
Website: kreyolang.com
Contact: contact@kreyolang.com
Banking details are processed exclusively by Apple, Google, or Stripe and are never transmitted to nor stored by Kreyolang on its own servers. We only retain the confirmation of subscription status (active / inactive / plan type) through RevenueCat.
| Purpose | Legal basis |
|---|---|
| Account creation and management | Contract performance |
| Progress synchronization (Supabase cloud) | Contract performance |
| Premium subscription management (RevenueCat) | Contract performance |
| Sending progress notifications and reminders | Consent |
| Anonymized usage analytics (service improvement) | Legitimate interest |
| Compliance with legal and accounting obligations | Legal obligation |
Kreyolang uses the following providers, selected for their GDPR compliance guarantees and certified security:
| Provider | Role | Location & safeguards |
|---|---|---|
| Supabase | Database, authentication, cloud storage | EU / USA — Standard Contractual Clauses (SCCs), SOC 2 certified |
| RevenueCat | Premium and mobile subscription rights management (iOS & Android) | USA — Standard Contractual Clauses (SCCs), data minimization |
| PostHog | Behavioral progress analytics (opt-in) | EU — EU Cloud, GDPR compliant, anonymized data |
| Stripe | Secure web payment processing | USA / EU — PCI-DSS Level 1 certified |
| Sentry | Error monitoring and app stability | EU — EU hosting, minimal data (userId + email only) |
| Expo | Push notification delivery (learning reminders) | USA — Only push token + notification content transmitted |
| Resend | Transactional email delivery (welcome, confirmation) | USA — Only the recipient's email address is transmitted |
How to exercise your rights:
Send your request to contact@kreyolang.com — Response time: 30 days maximum. In the event of an unsatisfied complaint, you may refer the matter to the CNIL (www.cnil.fr), the French data protection authority.
You may request a complete copy of all personal data we hold about you, within 30 days.
You may correct inaccurate information directly from your profile settings in the app, or by contacting us by email.
You may request the complete and permanent deletion of your account and all your personal data. This action is irreversible: it permanently erases your progression, XP, Gems, streaks, and learning history.
Deletion can be initiated:
You may request the export of your progress data in a structured, readable format (JSON) via contact@kreyolang.com.
You may object to the processing of your data for analytics purposes, or request its restriction, at any time from your privacy settings or by contacting us.
These cookies enable secure authentication (JWT tokens via Supabase) and store your preferences. They are essential to the operation of the service and do not require your consent.
Used via PostHog EU Cloud to analyze aggregated usage and improve the learning experience. These cookies require your prior consent via the dedicated banner. They may be declined without impacting your use of the service.
Kreyolang uses no third-party advertising cookies. No browsing data is shared with advertising networks.
We reserve the right to modify this policy to reflect legal, regulatory, or functional changes to our service.
In the event of a substantial change affecting your rights, you will be notified by email at least 30 days before the new provisions come into effect. The current version is always available on this page.
Christopher Jeanne EI — CMJ Group — Kreyolang trademark
SIREN: 879 333 664
47, rue Vivienne – 75002 Paris, France
Contact: contact@kreyolang.com
Supervisory authority: Commission Nationale de l'Informatique et des Libertés (CNIL)