Privacy

The site has no accounts, no forms, no cookies and no advertising. It counts page views with Cloudflare Web Analytics, which does not use cookies or local storage and does not fingerprint visitors. It records which page was viewed, the referring site, the country and the browser type, in aggregate.

Calculators run entirely in your browser. What you type into them is not sent anywhere, stored, or put in the page address. The country you last picked in a chart is remembered in your own browser only, so the next chart can show it too; clearing your browser data removes it.

“Report a problem” links open GitHub, which has its own privacy policy. Email to the site address is read by the person who runs it and is not shared.