Local and portable

Settings

No account is required. Progress stays in this browser unless you export it.

Experience

Reduced motionUse fades instead of flips and long card travel.Korean text firstPrefer Hangul before English where layouts support it.Session sizeChoose how many cards and questions appear in a normal learning session.Sound cuesOff by default; never required for feedback.

Progress data

Export learning history, preferences, and your local session before changing browsers or clearing site data. Google and Firebase identity details are never included.

Clear this device

This removes mastery, reviews, completed sets, and the resumable session only from this browser. It does not reset synced progress, sign out, or delete an account.

Content version 114e2b09f247

Snapshot 2026-07-24