Local study data
Saved route, lesson markers, unfinished tests, wrong-question IDs, and score history are stored in browser local storage. They are not automatically synchronized to a server.
Export and import
Export creates a file on the user's device. The site does not receive that file unless a user independently sends it elsewhere.
Analytics and advertising
The pre-domain baseline contains no advertising network or account system. If privacy-friendly analytics or ads are later enabled, this policy must be updated before launch.