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Cookie Policy

Last updated: 2026-10-06

This English text is a translation. The French version prevails.

1. Introduction

This Cookie Policy explains how H277 SAS (“ResonanceMetrics”, “we”, “our”, or “us”) uses cookies and similar technologies on https://resonancemetrics.com and the ResonanceMetrics platform (the “Service”).

This policy is part of our Privacy Policy.

2. What is a cookie?

A cookie is a small text file stored on your device (computer, tablet, or phone) when you visit a website. Cookies let the site recognize your device and remember some information about your visit.

Cookies may be:

  • Session cookies: deleted automatically when you close your browser
  • Persistent cookies: remain on your device until they expire or you delete them
  • First-party cookies: set by the site you are visiting
  • Third-party cookies: set by third-party services embedded in the site

3. Types of cookies we use

3.1 Strictly necessary cookies

These cookies are required for the Service to work. They cannot be switched off because they enable essential functions such as secure browsing and access to your account.

| Cookie | Purpose | Duration | Type | |--------|---------|----------|------| | sb-access-token | Supabase authentication | Session | First-party | | sb-refresh-token | Keep the session | 7 days | First-party | | __Host-next-auth.csrf-token | CSRF protection | Session | First-party | | cookie-consent | Remember your cookie choices | 1 year | First-party |

Legal basis: these cookies are exempt from consent because they are strictly necessary for the Service (Article 82 of the French Data Protection Act).

3.2 Preference / functional cookies

These cookies improve your experience by remembering preferences (language, display settings, and so on).

| Cookie | Purpose | Duration | Type | |--------|---------|----------|------| | theme | Theme preference (light/dark) | 1 year | First-party | | locale | Language preference | 1 year | First-party | | sidebar-state | Sidebar state | Session | First-party |

Legal basis: consent (GDPR Art. 6.1.a). You can refuse these cookies without a major impact on using the Service.

3.3 Analytics / audience-measurement cookies

These cookies help us understand how visitors use the Service so we can improve it.

| Cookie | Purpose | Duration | Type | Provider | |--------|---------|----------|------|----------| | _va_* | Usage analytics | 1 year | Third-party | Vercel Analytics |

Legal basis: consent (GDPR Art. 6.1.a).

Note: we use Vercel Analytics, which is designed to respect privacy. Collected data is anonymized and no personal data is shared with third parties for advertising.

3.4 Marketing / advertising cookies

We do not currently use marketing or advertising cookies.

We do not set cookies for targeted advertising or retargeting.

4. Managing your preferences

4.1 Consent banner

On your first visit, a consent banner lets you:

  • Accept all cookies: every cookie described above is enabled
  • Refuse all cookies: only strictly necessary cookies are enabled
  • Customize your choices: choose which categories you accept

4.2 Changing your choices

You can change your preferences at any time:

  • By clicking “Manage cookies” in the site footer
  • By deleting cookies in your browser

4.3 Browser settings

You can also configure your browser to block cookies. Instructions for the main browsers:

Warning: blocking some cookies can affect the Service, including signing in to your account.

5. Similar technologies

Besides cookies, we may use similar technologies:

5.1 Local storage

Browser local storage may remember some client-side preferences. That data is not sent to our servers automatically.

| Key | Purpose | Duration | |-----|---------|----------| | app-preferences | Interface preferences | Until deleted |

5.2 Session storage

Session storage holds temporary data that should not persist after the browser is closed.

6. Cookies set by third parties

Some third-party services integrated into the Service may set their own cookies. We do not control those cookies directly.

| Service | Purpose | Privacy policy | |---------|---------|----------------| | Vercel | Hosting, analytics | Vercel policy | | Supabase | Authentication | Supabase policy |

7. How long consent lasts

Your cookie consent is valid for a maximum of thirteen (13) months, in line with CNIL guidance.

When that period ends, we will ask for your consent again.

8. Updates to this policy

We may update this Cookie Policy to reflect changes in our practices or for other operational, legal, or regulatory reasons.

The last-updated date is shown at the top of this document.

9. Contact

For any question about this Cookie Policy:

H277 SAS

10. More information

To learn more about cookies and your rights:

By continuing to use the Service after being informed about cookies, you accept the strictly necessary cookies.