Privacy Policy

Calculator input is not stored

Values you type into a calculator are used only to produce the result you requested. They are not saved, not attributed to you, and not sent to a third party.

Calculation runs on the page you requested. We do not build a profile of you or your projects.

Cookies and tracking

Ordinary calculator use sets no cookies and runs no analytics, advertising or fingerprinting scripts. Invoking optional planner AI may set an essential, temporary HttpOnly session cookie for request limits; it is not used for tracking.

If a measurement or advertising provider is enabled in future, this page will be updated first and consent will be requested where the law requires it.

Server logs

Like any web server, this site records standard access logs: the requested address, the time, the response status, the referring page where provided, and the IP address and user agent of the request.

These logs are used for security, capacity planning and fault diagnosis. They are rotated and deleted on a short cycle and are not used for advertising or profiling.

Your choices and contact

No account or profiling dataset is created. You can remove saved planner configurations using your browser storage controls. Requests concerning standard server logs can be sent to the contact address in the site footer.

Planners and optional AI

Planner calculations run deterministically in your browser. Saving a configuration stores its parameters on your device; creating a share link includes the chosen deterministic parameters in that link. You choose whether to save or share.

If AI is enabled, your description or necessary planner facts are sent to DeepSeek only after the notice, consent and your explicit action. AI is optional; it does not perform authoritative calculations. Do not enter personal or sensitive information.

This application does not intentionally persist AI descriptions or raw responses. Free-text requests are not saved to localStorage, included in share links, sent to analytics, or written to CSV and print reports. The application does not log raw AI request bodies. This statement does not describe DeepSeek’s own data-retention practices.