Cookie Policy

Last updated: September 25, 2026

Draft notice. This page was prepared to cover the standard requirements of Polish and EU consumer-protection and data-protection law, but it is not legal advice. STEMviz's operator has not yet completed business registration — trader-identity fields below are placeholders. Have a Polish/EU-qualified lawyer review this page before accepting real payments.

A cookie is a small file stored in your browser. This page lists every cookie STEMviz currently sets. It doesn't cover analytics or advertising cookies, because we don't use any yet — see Section 3.

1. Strictly necessary cookies

These cookies are required for the Service to function and are exempt from consent under Article 5(3) of the ePrivacy Directive, as implemented by Article 173 of the Polish Telecommunications Law (Prawo telekomunikacyjne).

Supabase authentication cookies (name prefixed sb-) — keep you signed in between requests. Set when you log in; removed when you log out or the session expires.
stemviz_dev_access — an httpOnly cookie used only for a single developer's own content-preview bypass. It is never set for ordinary visitors and carries no tracking data.

2. Functional cookies

We do not currently set any non-essential functional cookies.

3. Analytics and advertising cookies

We do not currently use analytics, advertising, or third-party tracking cookies. If that changes, we will add a cookie-consent banner before any such cookie is set, and update this policy to describe it and how to opt out.

4. Managing cookies

Most browsers let you block or delete cookies in their settings. Blocking the strictly necessary cookies above will prevent you from staying signed in. For more detail on how we use the data these cookies carry, see our Privacy Policy.

5. Contact

Questions about this Cookie Policy: stemvizapp@gmail.com.