Last updated: April 18, 2026
Cookies are small text files that websites store in your browser to remember information between page visits. This Cookie Policy covers the PromptChief website (promptchief.tech), the web app, and the Chrome extension.
The marketing pages use two analytics tools to understand traffic and improve PromptChief: self-hosted Matomo (on our own server) and PostHog for product analytics. PostHog runs on PostHog Cloud EU (Frankfurt, Germany) under a data-processing agreement — your data stays in the EU and is never sold or used for advertising.
Both tools are only loaded after you click Accept Analytics in the cookie banner. If you decline, no cookies are set and no analytics load. You can withdraw consent at any time by clearing your browser's localStorage.
When analytics are active, Matomo may set _pk_id (13 months) and _pk_ses (30 minutes) cookies, and PostHog may set a ph_*_posthog cookie (up to 12 months). IP addresses are anonymised and session replay is disabled. Legal basis: Art. 6(1)(a) GDPR — your consent.
All fonts are self-hosted — no Google Fonts or other external requests that could set cookies.
The web app uses the following strictly necessary storage to function:
Legal basis: strictly necessary for the service to function (Art. 6(1)(b) GDPR — contract performance).
When you initiate a subscription checkout, the Paddle.com payment overlay loads in your browser. Paddle may set cookies and use local storage to maintain your checkout session and prevent fraud.
These are strictly necessary for payment processing. Paddle is the Merchant of Record and responsible for their own cookie usage. See paddle.com/legal/privacy for details.
The extension does not use browser cookies. All data is stored via Chrome's chrome.storage APIs, which are sandboxed to the extension and cannot be accessed by websites you visit.
| Context | Cookies Used | Purpose |
|---|---|---|
| Marketing pages | _pk_id, _pk_ses (Matomo); ph_*_posthog (PostHog EU) — consent-only | Analytics (optional, after consent) |
| Web App | Session cookie (Supabase) | Authentication (strictly necessary) |
| Checkout (Paddle) | Paddle cookies | Payment processing (strictly necessary) |
| Chrome Extension | None (uses chrome.storage) | — |
You can clear cookies at any time through your browser settings. Note that clearing web app cookies will log you out of the PromptChief app. To manage extension data: Chrome → Extensions → PromptChief → Details → Clear storage, or uninstall the extension.
Questions? Contact contact@promptchief.tech