Privacy

Last updated 2026-11-10

Short version: we don’t ask who you are, we don’t use cookies, and we don’t collect your results.

What we don’t collect

• No accounts, names or email addresses.
• No analytics or tracking scripts.
• No cookies.
• No advertising, for now (see below).

What stays on your device

The exercise saves your settings and recent results in your browser’s local storage so you can see your progress. This never leaves your device and we cannot see it. You can delete it with the “Clear history” button or by clearing your browser data.

Our hosting provider

Like all websites, the company that hosts this site briefly processes technical information, such as your IP address, to deliver pages and protect against attacks. We don’t use this to identify you.

Fonts and images

Fonts and photos are served from this site itself, not from third-party services.

If this changes

If we ever add adverts or analytics, we will update this page before doing so, explain what is collected, and ask for consent where the law requires it.