AI-powered flashcards with smart spaced repetition. Modern, free, and easy to use. Index is the modern alternative to Anki. Generate flashcards with AI, import from Anki, or create your own. Our spaced repetition algorithm adapts to help you remember longer. What makes Index different: - AI card generation from any topic or PDF - Import Anki decks in seconds - Modern, intuitive interface - Sync across all devices - Perfect for exam prep, language learning, and memorizing anything.