Cookie Policy
Last updated: September 21, 2026
The short version
This website does not use cookies. It sets no advertising, analytics or tracking cookie. We do not ask you for cookie consent, because there is nothing to consent to — the notice you may see at the bottom of the page is there to tell you what is stored in your browser, not to collect permission.
What we do use instead
The site stores a small amount of information in your own browser (using localStorage), which never leaves your device except where noted:
- Your session. When you sign in, your session token is kept in your browser so you are not signed out on every page. Deleting it signs you out.
- Your preferences. Chosen language and similar interface settings.
- Your study progress. Kept locally and, when you are signed in, synchronised with your account so you can continue on another device.
- Your dismissal of this notice. So the storage notice is not shown to you again.
All of this is strictly necessary for the features you asked for, or is a setting you chose yourself.
Third-party tracking
None. There is no Google Analytics, no Meta Pixel, no advertising network and no session-recording tool on this site.
Embedded videos
Some lessons in the Study Hub embed video from YouTube or Vimeo. Nothing is loaded from those providers until you open a lesson that contains a video. When you do:
- YouTube videos are loaded through
youtube-nocookie.com, the privacy-enhanced domain, so YouTube does not set its usual tracking cookies. - Video thumbnails are fetched from YouTube's image servers, which means your IP address is visible to Google at that moment.
- Vimeo players load under Vimeo's own policy and may set their own cookies.
These are the only third parties whose content is ever loaded into a page on this site.
How to clear it
Clearing your browser's site data for this website removes everything described above. You will be signed out and local progress will be cleared; progress already synchronised to your account stays in your account.