Learning System
Your notes remember what you forget.
FSRS-4.5 — the most advanced open-source spaced repetition algorithm — turns your notes into a learning system that ensures actual retention. AI generates cards automatically. You review; the algorithm schedules perfectly.
The Problem
Most knowledge tools are archives. You capture information obsessively but never actually retain it. The average person forgets 80% of what they read within a week without deliberate review — and no tool forces that review.
The Solution
FSRS-4.5 algorithm (replaces SM-2/Anki) with forgetting curve R(t) = (1 + 0.111 × t/S)^-0.5. AI generates flashcards and quizzes from any note automatically. Knowledge mastery score per topic with learning progression tracking. Study streaks. AI-generated podcasts from notes via ElevenLabs. Library integration: Project Gutenberg, arXiv, OpenLibrary.
Key benefits
AI auto-generates flashcards from any note — no manual card creation
FSRS-4.5: more accurate than Anki at predicting when you'll forget
Knowledge mastery score shows exactly what you know vs. what you're losing
AI podcasts let you review knowledge while commuting — generated from your notes
Study calendar with due-date integration
Mastery tracking per topic across your entire knowledge base
Technical Depth
FSRS-4.5 implements the forgetting curve R(t) = (1 + 0.111 × t/S)^-0.5. Cards are scheduled to maintain 90% target retention. Four rating buttons (Again/Hard/Good/Easy) update stability parameter S via Bayesian optimization. Significantly more accurate than SM-2 (Anki's algorithm) for long-interval prediction.