What is the SM-2 algorithm?

SM-2 calculates optimal review intervals based on your performance. Items you recall easily get longer intervals; items you forget get shorter ones.

How long until I see results?

You'll notice improved recall within 1-2 weeks. The real power shows over months as material stays in long-term memory.

Yes, daily review is ideal. Even 5-10 minutes per day is enough to maintain the spaced repetition schedule.

Spaced repetition works for any subject that requires memorization: vocabulary, concepts, facts, formulas, legal rules, medical terminology, etc.

Use the scientifically proven SM-2 algorithm to remember what you study for months and years, not just days.

Generate Quizzes from Your Material — Upload your study materials and generate AI quizzes. These become your spaced repetition items.
Take Your First Quiz — Answer all questions. Don't worry about getting them wrong - that's part of the process. Tip: Wrong answers are actually more valuable for learning than right answers.
Review Daily — VoiceBrief schedules questions based on the SM-2 algorithm. Review whatever comes up each day. Tip: Daily reviews take only 5-10 minutes once the schedule is established.
Trust the Algorithm — Questions you know well appear less often. Questions you struggle with appear more frequently. Let the system work.
Supplement with Audio Review — When a quiz reveals weak areas, relisten to the relevant audio sections for reinforcement.

Scientifically Proven — Spaced repetition is one of the most researched and validated learning techniques in cognitive science.
Efficient Study Time — You only review what you need to, when you need to. No wasted time on material you already know.
Long-Term Memory — Material reviewed through spaced repetition is retained for months and years, not just until the exam.

What is the SM-2 algorithm?: SM-2 calculates optimal review intervals based on your performance. Items you recall easily get longer intervals; items you forget get shorter ones.
How long until I see results?: You'll notice improved recall within 1-2 weeks. The real power shows over months as material stays in long-term memory.
Should I review every day?: Yes, daily review is ideal. Even 5-10 minutes per day is enough to maintain the spaced repetition schedule.
Can I use this for any subject?: Spaced repetition works for any subject that requires memorization: vocabulary, concepts, facts, formulas, legal rules, medical terminology, etc.

How to Generate AI Quizzes — Let AI create targeted quiz questions from your study materials, then use spaced repetition to lock in knowledge.
How to Memorize Faster with Audio — Use proven cognitive science techniques combined with audio learning to memorize material 2-3x faster.
How to Create Flashcards — Build your own flashcard decks and study them with flip animations and progress tracking.