Cookie Policy — Greenzone
Effective date: July 3, 2026
This policy explains what cookies and browser storage Greenzone (joingreenzone.de / joingreenzone.com) uses. The short version: only what is technically required to keep you logged in — nothing else.
1. What We Use
| Name / type | Provider | Purpose | Duration |
|---|---|---|---|
sb-<project>-auth-token (Supabase Auth session; cookie and/or local-storage tokens, may be split across .0/.1) |
Supabase (first-party) | Keeps you logged in; identifies your session securely | Up to 400 days, or until logout / token expiry |
UNIT_SYSTEM |
Greenzone (first-party) | Remembers your metric/imperial preference | Up to 1 year, or until you clear browser storage |
NEXT_LOCALE |
Greenzone (first-party) | Remembers your language choice (German/English) when set via the switcher | Up to 1 year, or until you clear browser storage |
Legal basis: These are strictly necessary for the service you request (logging in and using your private scorecard). Under § 25(2) Nr. 2 TDDDG (German implementation of the ePrivacy rules) and Art. 6(1)(b) GDPR, no consent banner is required for strictly necessary cookies — which is why Greenzone has none.
2. What We Do NOT Use
- No analytics cookies (no Google Analytics or similar)
- No tracking pixels
- No advertising or marketing cookies
- No third-party cookies
- No cross-site or cross-device tracking
If this ever changes (e.g. an analytics tool is added), this policy will be updated and a consent mechanism will be introduced before activation.
3. Managing Cookies and Storage
You can delete cookies and local storage at any time in your browser settings (typically under Privacy → Clear browsing data / Site data). You can also instruct your browser to block cookies for this site.
Please note: the Supabase Auth session is essential. If you block or delete it, you cannot stay logged in and the Service will not function. There is no tracking to opt out of — blocking cookies here only breaks login.
4. Questions
Contact: hello@joingreenzone.com. See the Privacy Policy for full details on data processing.
This document is provided in English for convenience on joingreenzone.com. The German version (Cookie-Richtlinie) on joingreenzone.de is the authoritative version in case of discrepancies.