What we store
Short version: your email address and your progress through the course. Nothing else.
What is stored
- Your email address — used only to send you a sign-in link and to recognise you when you come back.
- Your progress — which questions you have answered, whether you got them right, how long you took, which topics are due for review, and your streak.
What is not stored
No password — there is not one. No name, no age, no school, no address. No advertising or analytics trackers. Your progress is not shared with anyone, and it is not sold.
Who can see it
You can. The database enforces, at the row level, that your records are readable only by your own account — another student signed in on the same site cannot see them.
Deleting it
There is a Delete my data control in the footer of every page. It removes your progress immediately, without asking anyone. You do not have to give a reason.
If you are under 18
This is a personal revision tool rather than a school system. If you are under 18, check with a parent or guardian before signing up with your email address.