Privacy policy

Effective from 24 October 2026.

Data controller

The data controller is the owner of mojekalkulatory.pl. Contact: (see also the Contact page).

What data we process

The calculators run entirely in your browser — the amounts you enter are never sent anywhere or stored. We have no user accounts or forms.

The site is hosted by GitHub Pages (GitHub, Inc.), which automatically logs data such as your IP address and browser type on every visit for security purposes. Fonts are loaded from Google Fonts, so your IP address is also sent to Google.

Cookies and advertising

The site may show Google AdSense ads. Google and its partners use cookies to show ads based on your previous visits to this and other websites. We ask for your consent to personalised ads on your first visit via a Google consent message. More information: policies.google.com/technologies/ads. You can turn off ad personalisation in Google Ad Settings.

The site contains affiliate links (marked “Advertisement”). When you click one, the affiliate network may set a cookie to credit us with a possible commission. We do not pass any of your data to it.

Your rights

Under the GDPR you have the right to access, rectify and erase your data, to restrict processing and to object, as well as the right to lodge a complaint with the Polish data protection authority (UODO, uodo.gov.pl). You can delete or block cookies in your browser settings.