Privacy

Your date stays local

The date you enter is processed in this browser. It is never included in a network request, URL, analytics event or persistent app storage. The app loads its bundled chart dataset from the same origin. It does not request your date from Wikipedia, Billboard or another API. All lookup and receipt processing happens locally; no personal input or file is uploaded for server processing.

Clear removes the date, result and receipt preview from the current page. Your browser may restore form values on Back or reload. Saving or copying a chart receipt produces local JSON that includes the date you entered, result, provenance and attribution. If this contains your birthday, treat the saved file or copied text as personal information. Whether a file is saved depends on your browser’s download support.

External source links

Opening a source or license link contacts that provider. Its privacy terms apply. Source links use a no-referrer policy and open separately.

Cloudflare hosting

Cloudflare Pages is the selected static hosting provider on its regular Free plan. Serving these files can expose ordinary request metadata, such as IP address and user agent, to Cloudflare. The birthday you enter is processed only in your browser and is not sent to Cloudflare. See Cloudflare’s privacy policy.

Advertising

Advertising is not configured. This package has no advertising script, analytics collector or account login. Any future integration must be disclosed before publication.

Operator contact is available in the imprint.