Privacy

Last updated: 12 August 2026

The short version

Your quiz and calculator answers never leave your browser. They are computed on your device. We do not receive them, store them, or transmit them anywhere.

Quiz and calculator data

Every tool on this site runs entirely client-side. When you answer the symptom questionnaire or enter numbers into a calculator:

• the calculation happens in your browser
• nothing is sent to our server
• nothing is written to a database — we do not operate one for this
• we cannot see your answers, and neither can anyone else

If you share a result link, your answers are encoded into the URL itself. That link contains your responses — treat it as private and only share it with someone you’d be comfortable telling directly. We still never receive it.

Analytics

We may use privacy-respecting analytics to understand which pages are useful — page views, referrers, approximate country. We do not build advertising profiles and we do not sell data.

If we later add a specific analytics provider, it will be named here before it goes live.

Search Console

We use Google Search Console and Bing Webmaster Tools to see which search queries lead here. These report aggregated, anonymised query data. They do not identify individuals.

Advertising

There is currently no advertising on this site.

If we add it, this page will be updated before any ad code ships, and it will name the network and explain what that means for cookies and tracking.

Cookies

We set no tracking cookies of our own. Your theme preference (light/dark) is stored locally in your browser and never transmitted.

Contact and email

If you email us, we hold that email in order to reply to it. We do not add you to any mailing list — we don’t operate one.

Your rights

If you’re in the UK, EU, or a US state with comparable law, you have rights to access, correct, and delete personal data held about you. Since the tools are client-side and we operate no user database, in most cases we hold nothing about you at all. If you have emailed us and want that deleted, ask and we’ll delete it.

Children

This site is not directed at children under 13 and we do not knowingly collect data from them.

Changes

Material changes will be reflected here with an updated date at the top. Questions: contact us.