Privacy Policy

Last updated: March 5, 2026

1. Data controller

Company name: OptiMetier (SASU — French simplified joint-stock company)
Registered office: 25 Impasse des Hirondelles, 61500 Chailloue, France
DPO / Data controller email: effects-lab@optimetier.fr

2. Data collected and purposes

Data	Purpose	Legal basis (Art. 6 GDPR)	Retention
Email address	Authentication (magic link), transactional emails	Performance of contract	Account duration + 3 years
Favorites (list of effects)	Cross-device synchronization	Performance of contract	Account duration
Preferences (theme, accent)	Interface personalization	Performance of contract	Account duration
Payment data	Subscription processing	Performance of contract	Managed by Stripe (never stored on our servers)
IP address (server logs)	Security, abuse prevention	Legitimate interest	12 months
Anonymous usage data (Matomo)	Traffic statistics	Legitimate interest	Anonymous — no personal data

3. Sub-processors and data transfers

Sub-processor	Purpose	Location	Safeguards
Stripe Inc.	Secure payment	USA	DPF (EU-US Data Privacy Framework), PCI DSS
Hostinger International	Web hosting	EU (Lithuania/Cyprus)	EU servers
Supabase Inc.	Database (PostgreSQL)	EU (AWS eu-west-1, Ireland)	DPF, SOC 2 Type II, data encrypted at rest
Google Workspace	Transactional email delivery (SMTP)	EU	DPF, ISO 27001, SOC 2
Matomo (self-hosted)	Anonymous statistics	France (stats.optimetier.fr)	No personal data collected, hosted on our own servers
Cloudflare Inc.	Anti-spam protection (Turnstile CAPTCHA)	USA / EU	DPF, ISO 27001, SOC 2

We do not sell, rent or share any personal data for advertising or commercial purposes.

4. Cookies and trackers

The website only uses strictly necessary technical cookies, exempt from consent requirements (as per CNIL — French Data Protection Authority — guidelines):

Authentication session: PHP session cookie, expires when the browser is closed
Preferences: theme and customizer settings (localStorage, not a cookie)

No advertising, analytics or profiling cookies are used. Matomo Analytics (self-hosted) operates without cookies.

5. Your rights (GDPR — Articles 15 to 22)

You have the following rights regarding your personal data:

Access (Art. 15): obtain confirmation of processing and a copy of your data
Rectification (Art. 16): correct inaccurate or incomplete data
Erasure (Art. 17): request the deletion of your data ("right to be forgotten")
Restriction (Art. 18): temporarily freeze processing
Portability (Art. 20): receive your data in a structured format (JSON)
Objection (Art. 21): object to processing based on legitimate interest

To exercise these rights: effects-lab@optimetier.fr. We respond within 30 days maximum.

6. Right to lodge a complaint

If you believe that the processing of your data is not compliant, you may lodge a complaint with the relevant supervisory authority:

EU and French residents:

CNIL (Commission Nationale de l'Informatique et des Libertes)
3 Place de Fontenoy, TSA 80715, 75334 Paris Cedex 07, France
Website: cnil.fr

UK residents: your data is also protected under the UK GDPR and the Data Protection Act 2018. Your supervisory authority is the Information Commissioner's Office (ICO): ico.org.uk.

California residents (USA): under the California Consumer Privacy Act (CCPA/CPRA), you have the right to know the categories of personal data collected, to request their deletion, and to not have your data sold. We do not sell any personal data. To exercise your rights: effects-lab@optimetier.fr.

7. Security

Encrypted connections via HTTPS (TLS 1.2+)
Magic link authentication (no passwords stored)
Payments secured by Stripe (PCI DSS Level 1)
Data access restricted to the data controller only

8. Minors

The service is intended for professionals and developers. We do not knowingly collect data from persons under the age of 16. If you are a parent and believe your child has provided us with data, please contact us for deletion.

9. Changes

This policy may be updated. In the event of a substantial change, we will notify you by email. The current version is always available on this page.

10. Contact

For any questions regarding your data: effects-lab@optimetier.fr