Privacy

No accounts, no cookies, no tracking

You don't need an account for anything here, and we don't ask you to create one. We don't set cookies, and we don't use behavioural advertising or cross-site tracking of any kind. Many of our readers are young people, and the site is designed with the ICO Children's Code principle of collecting as little data as possible.

The School & Travel Card stays on your screen

The card builder runs entirely in your browser. Nothing you type is saved, sent to us, or shared with anyone. When you close the page, it's gone. The only ways anything leaves the page are the ones you trigger yourself: printing it or saving it as a PDF.

Anonymous page statistics

We use Vercel Web Analytics to count page views. It is cookieless and aggregate: it tells us which pages are read, not who read them. We can't identify you from it and we don't try to.

If you email us

If you use a "suggest a correction" link or email us, we'll see your email address and whatever you write. We use it only to read and reply, and we don't add you to any list.

Links to other sites

We link out to organisations like the NHS, Diabetes UK and DigiBete. Their sites have their own privacy policies, which we don't control.

Who runs this

No Perfect Numbers is a personal project run by its founder in the UK. It is not a company service and carries no advertising. If any of this ever changes, this page will change first, with the date below updated.

Last updated: 22 July 2026