Privacy Policy

Calculator10 runs in your browser. The numbers you enter are calculated on your device. We do not send them to any server, and we do not use analytics, advertising trackers or cookies.

If you pick a colour skin (Classic, Golden, Dark or Pink), your choice is saved in your own browser only, so it is remembered next time. It is never sent anywhere.

The calculation history shown on the calculators is kept only in the page's memory and disappears when you refresh or close the page.

Third-party requests:

Google Fonts is used for the site's fonts. When fonts load, your IP address and browser details are sent to Google, as with any web font.
Optional translation: in the Formulas section, some languages use Google Translate. This only happens after you confirm, and only the English formula description text is sent, never your numbers.
Voice input (optional): the Speak button uses your browser's own speech recognition, which may send your voice to its provider (for example Google in Chrome or Apple in Safari). It starts only after you tap Speak and confirm, and your browser asks for microphone permission.
Share buttons: WhatsApp, Facebook, X, Telegram and the result share buttons are plain links. They open those services in a new tab only when you tap them, and only share the text or link you chose.
Hosting: this site is hosted on GitHub Pages, which may keep standard server logs under GitHub's own privacy policy.

To work offline, the site saves its own files (pages, icons and fonts) in your browser's cache on your device. You can remove them by clearing the site data in your browser.

If this policy changes, the updated version will be posted on this page.

Contact: shopetsy13@gmail.com