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Privacy Policy

MasterX - Protection of your personal data

Last updated: July 12, 2026

GDPR Compliant

1. INTRODUCTION

MasterX is committed to protecting the privacy and personal data of its users. This privacy policy explains how we collect, use, store and protect your personal information when you use our ECU tuning software and services.

This policy complies with the General Data Protection Regulation (GDPR) and other applicable privacy laws.

2. DATA CONTROLLER

Company: MasterX, SASU (French simplified single-shareholder joint-stock company), share capital €500

Registered office: 122 rue Amelot, 75011 Paris, France

SIREN: 999 650 872

Email: masterxresolve@gmail.com

WhatsApp: +262692114317

We are the data controller for the personal information processed in connection with our services. See our Legal Notice for full company details.

3. DATA WE COLLECT

3.1 Information you provide to us

  • Account information: Name, email address, phone number
  • Payment information: Billing details, payment method (processed securely by our payment providers)
  • Communication data: Messages, support requests, feedback
  • License information: License type, activation details, usage statistics

3.2 Information we collect automatically

  • Technical data: IP address, device information, browser type
  • Usage data: Software usage statistics, features used, session duration
  • Performance data: Error logs, crash reports, performance metrics

3.3 ECU files you process

  • Original ECU file you load into the software
  • Modified ECU file generated by MasterX
  • HW/SW references, ECU and vehicle identifiers
  • Vehicle Identification Number (VIN), when present in the loaded file
  • History of solutions applied on your account

These files are stored encrypted to enable backup and one-click restore of the original, and are only accessible to you and, when you request support, to the MasterX technical team.

4. HOW WE USE YOUR DATA

We use your personal data for the following purposes:

  • Service provision: To provide and operate our ECU tuning software
  • Account management: To create and manage your user account
  • Payment processing: To process payments and manage subscriptions
  • Customer support: To respond to your inquiries and provide technical support
  • Software improvement: To analyze usage patterns and improve our software
  • Security: To detect and prevent fraud, unauthorized access
  • Legal compliance: To comply with legal obligations and regulations
  • Marketing: To send you updates about new features (with your consent)

5. LEGAL BASIS FOR PROCESSING

We process your personal data based on the following legal grounds:

  • Contract performance: To provide the services you have requested
  • Legitimate interests: To improve our services and ensure security
  • Consent: For marketing communications and optional features
  • Legal obligation: To comply with applicable laws and regulations

6. DATA SHARING AND DISCLOSURE

We do not sell your personal data. We may share your information with:

  • Payment processor: Stripe (PCI-DSS certified)
  • Website hosting: Netlify, Inc. (USA)
  • File and database hosting: Supabase, Inc. (USA)
  • Messaging: Google / Gmail (email), WhatsApp (Meta) for support
  • Legal authorities: When required by law or to protect our rights
  • Business transfers: In case of merger, acquisition, or sale of assets

All third parties are contractually required to protect your data and use it only for specified purposes.

7. DATA SECURITY

We implement appropriate technical and organizational measures to protect your personal data:

  • Encryption: Data is encrypted in transit and at rest
  • Access controls: Limited access to personal data on a need-to-know basis
  • Regular review: Ongoing review of our security practices
  • Incident response: Procedures to handle potential data breaches
  • Staff training: Regular privacy and security training for employees

8. DATA RETENTION

We retain your personal data only as long as necessary:

  • Account data: While your account is active and for 2 years after closure
  • Payment data: For 7 years for accounting and legal purposes
  • Support data: For 3 years after the last interaction
  • Technical logs: For 12 months for security and performance analysis
  • Marketing data: Until you withdraw consent or object to processing

9. YOUR RIGHTS

Under GDPR and other privacy laws, you have the following rights:

  • Access: Request information about your personal data we process
  • Rectification: Correct inaccurate or incomplete personal data
  • Erasure: Request deletion of your personal data ("right to be forgotten")
  • Restriction: Limit the processing of your personal data
  • Portability: Receive your data in a structured, machine-readable format
  • Objection: Object to processing based on legitimate interests
  • Withdraw consent: Withdraw consent for consent-based processing

To exercise these rights, contact us at: masterxresolve@gmail.com

10. INTERNATIONAL TRANSFERS

Some of our providers (notably website and file hosting) are based outside the European Union, in particular in the United States. Where this applies, we ensure appropriate safeguards are in place:

  • Adequacy decisions by the European Commission, or
  • Standard Contractual Clauses (SCCs) issued by the European Commission
  • Your explicit consent, where required

11. COOKIES AND TRACKING

On your first visit, a banner offers three equally-weighted choices: Accept all, Reject all, or Customize. Your choice is remembered, and you can change it at any time by reopening the preferences panel.

11.1 Essential cookies

Required for the site to function (session, language, preferences). Always active: the site will not work correctly without them.

11.2 Analytics cookies

MasterX does not set any analytics or advertising cookies today. Your preference is saved and will apply automatically if we add any in the future; this page will then be updated to list each cookie, its purpose and its retention period.

11.3 Managing your preferences

You can also configure your browser to block all cookies, including essential ones; some parts of the site may then stop working correctly.

12. CHILDREN'S PRIVACY

Our services are not intended for children under 16. We do not knowingly collect personal data from children. If you believe we have collected information from a child, please contact us immediately.

13. CHANGES TO THIS POLICY

We may update this privacy policy from time to time. We will notify you of significant changes by:

  • Email notification to registered users
  • Prominent notice on our website
  • In-app notification in our software

14. CONTACT US

For questions about this privacy policy or our data practices:

  • Email: masterxresolve@gmail.com
  • WhatsApp: +262692114317
  • Response time: We will respond within 30 days

If you are not satisfied with our response, you have the right to lodge a complaint with your local data protection authority.

15. PRIVACY CONTACT

MasterX is a small SASU and is not required under GDPR to appoint a formal Data Protection Officer. For any data protection matter, contact us directly at:

Email: masterxresolve@gmail.com