Your study data.

What we save

We store your chosen state, session mode, question identifiers, submitted answers, and timestamps in the site’s database to calculate progress and recover unfinished sessions. A random browser cookie connects your browser to those records. Clearing cookies disconnects that browser from its history; it does not by itself erase the database records.

If you create an account, Supabase Authentication processes your email address, password credentials, and authentication sessions. We do not store plaintext passwords in the study database. Confirmation and password-reset emails are sent through our email delivery provider. Your email is used for account services, not a marketing mailing list.

Sound and motion preferences and your most recently chosen state are saved locally in your browser, along with your optional study plan and test date. Your browser sends its time zone when loading progress so daily goals and streaks follow your local day.

Access and retention

Guest study history is available to the browser holding your study cookie. When you log in or confirm an account on that browser, its guest sessions can be attached to your account. Account study history is available on other devices after you log in. Local preferences and study plans remain on the device where you set them.

Vercel hosts the application and Supabase stores study records and manages authentication. Site operators and service providers may process operational and security logs to run the service. Study records are retained until you delete them; an automatic inactivity deletion schedule is not configured. Provider backups and security logs follow their own retention periods.

External resources

Official agency links open third-party websites with their own privacy practices. The platform does not send your answers to those websites. No advertising or marketing analytics scripts are included in the application.

Clear your history

This permanently deletes practice sessions and answers connected to your signed-in account, or this browser’s guest cookie when signed out, across all states. You can start fresh afterward. Deleting history does not delete your login. You can permanently delete your account and its study history from your account dashboard after confirming your password.