Privacy

Your privacy

Short version: this site does not ask for your name or email, and it does not track you.

What is stored

To remember your progress and let you continue an unfinished session, the site saves a small amount of information in your browser (local storage): the exercises you saw recently, your session counts, and any session in progress. This information stays on your device. We never receive it.

What we do not do

• No accounts or sign-up yet.
• No advertising and no third-party trackers.
• No cookies used for tracking.

Clearing your data

You can erase everything by clearing this site's data in your browser settings.

Changes

If we add accounts or analytics later, we will update this page first and explain what changes.

Last updated: October 2026.