productivity
Flashcard Study Tool
Build flashcard decks and study with spaced repetition (SM-2 algorithm). Tracks your progress, schedules cards by difficulty, and saves everything to localStorage.
Select or create a deck
Auto-saves locally
Spaced repetition explained
The SM-2 algorithm schedules cards based on how well you know them. Cards you find easy are shown less frequently. Cards you struggle with appear more often. This produces the most efficient learning possible — no time wasted reviewing things you already know.