Strategy · 5 min read
How spaced repetition (FSRS-5) helps exam preparation
Spaced repetition is the most evidence-backed study technique for long-term retention. FluentMock uses FSRS-5 — the current state-of-the-art algorithm — to schedule your reviews.
Why cramming fails
Reading a word list 10 times in one sitting feels productive but barely affects long-term memory. The Ebbinghaus forgetting curve shows that without active review, most newly learned material is forgotten within days. Spaced repetition spreads reviews out so each one happens just before you are about to forget — which is when the memory consolidates most strongly.
What FSRS-5 does
FSRS (Free Spaced Repetition Scheduler) version 5 is the algorithm FluentMock uses to decide when to re-show each flashcard. After every review, it updates an estimate of:
- Stability — how long the card's memory will last before recall probability drops to ~90%.
- Difficulty — how hard this specific card is for you.
- Retrievability — your current probability of recalling it right now.
The next review is scheduled when retrievability is predicted to fall to your target (90% by default). The result: roughly 30–50% fewer reviews than older algorithms like SM-2 for the same retention rate.
How to use it well for IELTS and TOEFL
- Add words you got wrong in practice — not generic word lists. They will appear in context.
- Do reviews every day. Skipping days makes the schedule less accurate and reviews pile up.
- Be honest when grading yourself. "Easy" means you knew it instantly. "Good" means you recalled it after a brief pause.