Privacy

No cookies, no trackers, no analytics, no advertising, no accounts, no forms.

• The figures you type are processed by JavaScript in your browser only. They are never sent to a server, stored or shared.
• The .ics calendar file is generated in your browser and saved directly to your device.
• Fonts are served from this site; no third-party requests are made when you use it.

Hosting

The site is served by Cloudflare, Inc. (101 Townsend St, San Francisco, CA 94107, USA). Like any web host, Cloudflare processes technical data such as IP addresses to deliver pages and protect against attacks. We do not access or receive this data. See Cloudflare’s privacy policy.

Your rights

Because we hold no personal data about you, there is nothing to access, correct or delete. Visitors in the UK and EU keep their rights under the UK GDPR and GDPR; visitors in California keep their rights under the CCPA. We do not sell or share personal information.

Changes

If this ever changes (for example, reminder emails or advertising), this page will be updated first, and consent will be asked where the law requires it.