Last updated: 18 October 2026.
The short version
The calculators on ads-system.com run entirely in your browser. The numbers you type are never sent to us or to anyone else, and there is no account, no sign-up and no email form. The only data that can leave your browser is anonymous visit statistics from Google Analytics, and only if you choose “Allow analytics” in the banner.
Who runs this site
ads-system.com is run by Mihail Cheshitev, Plovdiv, Bulgaria. Questions about this policy can be sent through the contact details on the site.
Calculator inputs
Every calculation happens in JavaScript on your device. Inputs are not transmitted, logged or stored on a server. Close the tab and they are gone.
Analytics (only with your consent)
If you allow analytics, the site loads Google Analytics 4 (provided by Google Ireland Limited). It records pages viewed, approximate location, device and browser type, and how you arrived, using cookies such as _ga. We use it only to see which pages are useful. We do not use it for advertising and we do not combine it with other data. Legal basis: your consent (GDPR Article 6(1)(a)). Google may process data outside the EU under its standard contractual clauses. See Google’s privacy policy at policies.google.com/privacy.
If you decline, the Google Analytics script is never loaded and no analytics cookie is set. Your choice is stored in your browser’s local storage under the key asys_consent so the banner does not ask again. You can change it at any time with the “Cookie settings” link in the footer, or by clearing site data in your browser.
Server logs
Like every website, our host (Hostinger) keeps standard technical logs, such as IP address and request time, for security and to keep the site running. These are not used to identify you and are kept for a limited period by the host.
Your rights
Under the GDPR you can ask for access to, correction of, or deletion of personal data, and you can withdraw consent at any time. You can also complain to the Bulgarian Commission for Personal Data Protection (cpdp.bg).
Changes
If this policy changes, the date at the top will change with it.