You don’t forget randomly. You forget on a curve: steep in the first hours, flatter every time you successfully recall something. Psychologists have measured this since Ebbinghaus in the 1880s, and the fix has been known just as long: review the material right before you’d forget it, and each review pushes the next forgetting further out.
That’s spaced repetition. Most people know it from flashcard apps. And most people who try flashcard apps quit, because the apps hand you the hardest part as homework: building the deck.
Your deck builds itself
In Pass-IT, every question you answer wrong becomes a review card automatically. No typing, no importing — every miss is queued for you automatically. The moment you miss a question in practice, it’s queued, with the full question, the correct answer, and the explanation attached.
This matters more than it sounds. Your wrong answers are, by definition, the exact material you personally are about to lose points on. Not what a deck author guessed the average candidate struggles with. Yours. A review queue built from your own mistakes is the most personalized study plan that can exist, and you never spent a minute building it.
The schedule, concretely
Pass-IT runs SM-2, the same algorithm family that made Anki famous. Answer a review correctly and the card’s interval grows:
- The card first comes due 10 minutes after you miss the question
- Then 1 day
- Then 3 days
- Then 7 days
- After that, each interval is multiplied by the card’s ease factor, roughly 2.5× longer each time
Miss the card again and it resets: back to 10 minutes, and the card’s ease factor drops, so its future intervals grow more slowly. Stubborn questions automatically get seen more often; easy ones get out of your way. After seven clean reviews, a card counts as mastered and mostly leaves you alone.
None of this needs your attention. You open the review queue, it shows you what’s due now, you answer.
Why this is the fastest part of your prep
Re-studying what you already know feels productive and does almost nothing. The research on this is unusually clear: spacing practice over days beats massed cramming in hundreds of controlled experiments, and testing yourself beats re-reading by a wide margin (Cepeda et al., 2006; Roediger & Karpicke, 2006). (We wrote up the research behind the whole product, with citations, on the method page.)
Spaced repetition is what makes those findings operational: it deletes the redundant reviews from your schedule and keeps only the ones that are about to pay off. Ten minutes of due cards is worth more than an hour of re-reading notes, because every one of those cards is a question you demonstrably couldn’t answer, timed to the moment before you’d forget the correction.
Where it fits in the loop
Spaced repetition is one of three mechanisms working the same problem in Pass-IT. Adaptive practice finds your weak domains and keeps them in rotation. Alex explains every miss so the correction actually makes sense instead of being memorized noise. And the review queue makes sure the correction sticks past Tuesday.
Practice finds the gap and the explanation fills it; the schedule makes sure it stays filled. Your readiness score watches all of it, and when it crosses 80%, we’re confident enough to put money on the result.
The queue is built into the app: finish a practice session and your missed questions are waiting, ready to retry, and they keep coming back on schedule until they’re mastered. If you practiced today, something is probably due tomorrow around breakfast. That’s not a bug. That’s the curve.
