Privacy Policy

Last updated 26 September 2026

Your calculations stay on your device

Every calculation runs in your browser. The amounts you enter are never sent to our servers or stored by us. There are no accounts and no sign-ups.

What your browser remembers

To save you a step next time, your browser may remember the merchant type you last selected, using local storage. This stays on your device, and you can clear it any time by clearing your browser's site data.

Analytics

We use Cloudflare Web Analytics to count visits and see which pages are useful. It does not use cookies, does not track you across other websites, and does not collect personal information. Our site is served through Cloudflare, which processes standard technical data such as IP addresses to deliver and protect the site.

Advertising

We do not show ads at the moment. If we add advertising in future, for example Google AdSense, third-party vendors including Google may use cookies to serve ads based on your visits to this and other websites. We will update this page before that happens, and you will be able to opt out of personalised advertising through Google's Ads Settings.

Links to other sites

Pages may link to other websites. We are not responsible for their content or privacy practices.

Changes

We may update this policy. The date at the top shows when it last changed.