Privacy

We collect only the data needed for an account.

Updated October 5, 2026.

Account data

Registration uses an email, name or nickname, password and language. Passwords are stored as strong hashes. Recovery uses a time-limited, single-use token. Learning progress, answers and notes of registered learners are stored on the server and can be exported or deleted from “My notes and review”.

Logs and cookies

The server may record IP address, time, URL, response status and browser details for diagnostics and protection. Public pages do not need cookies. Progress in free lessons without an account and your theme choice stay in your browser (IndexedDB and localStorage) and are not sent to the server until you sign in. Sign-in and form protection use an essential session cookie. There are no analytics or advertising cookies.

External services

Email and social sign-in operate only after separate configuration. The site has no external fonts, advertising trackers or payments. A data request contact will be published when the owner provides one.