Before you log in
The browser stores an anonymous training identifier and local lesson progress. Practice answers, timing, scores, and missed questions may be associated with that anonymous identifier so Mistake Review can work.
What is saved when you practice.
This page describes the data used by the current training experience. It is written for learners, not as a wall of legal language.
Product interaction events
The site records page family, game starts, first answers, completed rounds, guide opens, review clears, primary training links, result sharing actions, and a one-time seven-day return marker. These events use the anonymous training identifier unless you are logged in; they do not include answer text or an email address in the event properties.
When you log in
Your email address is used to send a one-time sign-in code. The browser stores the returned sign-in token and basic account information so it can request your saved records.
When you share a result
The public share page shows summary statistics such as score, accuracy, correct answers, streak, completion, and run time. It does not display your email, answer history, or missed topics.
Browser storage
Signing out removes the saved sign-in token and account details from local storage. Anonymous identifiers, first-visit timing, and lesson-progress markers may remain so local practice and return measurement can continue.
PRACTICAL CONTROL
Use private browsing or clear site data for a fresh anonymous profile.
You can practice without creating an account. Clearing this site’s browser storage removes locally saved identifiers and completion markers from that browser, although server records already linked to an account are not removed by clearing browser storage alone.