Remember what you learn, for good.

Without review, most new knowledge fades within days; the psychologist Hermann Ebbinghaus measured this “forgetting curve” in 1885. Smart Review brings each question from the lessons you passed back just before you would forget it. A right answer pushes it further away. A wrong answer brings it back tomorrow.

How the spacing works

Your deck fills itself: pass a lesson quiz in Barqish Path and its 3 questions join, and every question you miss in the Level Check joins too. There are 123 questions across 9 levels. Each right review earns 2 XP, up to 20 XP a day, and keeps your learning streak alive. Signed-in members keep their deck on every device; visitors keep it in this browser.