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What Is Spaced Repetition?
Your brain forgets things on a predictable curve — rapidly at first, then gradually. Spaced repetition exploits this by reviewing words right before you'd forget them. Each successful review pushes the next review further out: 1 day, 3 days, 1 week, 2 weeks, 1 month. Eventually, a word is permanently in long-term memory with minimal effort.
How FSRS Works
Lalo uses FSRS (Free Spaced Repetition Scheduler) — the same open-source algorithm that powers modern Anki. Unlike older algorithms like SM-2, FSRS adapts to your individual memory patterns. It tracks how well you know each word and calculates the optimal review time. The result: you spend less time reviewing and retain more.
Why Frequency + SRS = The Fastest Path
Most apps teach random vocabulary. Lalo combines two scientifically proven strategies: learning the most frequent words first (Zipf's law) and reviewing them with optimal spacing (FSRS). This means every minute of study gives you the maximum possible comprehension gain. It's the difference between learning 'serendipity' and learning 'want'.
Tips for Effective Practice
Keep sessions short (5-10 minutes). Consistency beats intensity — daily practice is far more effective than weekly cramming.
Trust the algorithm. If a word comes up for review, review it. Skipping reviews breaks the spacing schedule.
Use the 'I already know this' button honestly. Marking words you already know lets the system focus on what you actually need to learn.
Don't rush. When a new word appears, take a moment to read the example sentence and hear the pronunciation. Context helps memory.