Privacy

Data we collect

The library is usable with no account and no personal data. Study progress — streaks, mastery, weak-topic flags and recent pages — is stored in your own browser by default and never leaves the device unless you choose to sign in and sync it.

We collect aggregate, non-identifying usage statistics so we know which topics need better material. Children are not profiled for advertising.

How we use it

Progress data is used for one purpose: to recommend the next concept, resource or revision session. AI Tutor conversations are used to answer your question in context and to improve retrieval quality; they are not sold or used to build advertising profiles.

Your rights

You can clear all locally stored progress from your browser at any time, and where an account exists you can export or delete it outright. Requests are honoured within thirty days, and deletion removes derived progress data as well as the account record.

Contact

Privacy questions, data-subject requests and questions about school use of the platform can all be raised through the contact page.