- Deck management tool with custom title and color selection
- Spaced repetition algorithm based on recall quality rating
- Learning statistics dashboard for total modules and due nodes
- Interactive flashcard interface with 3D rotation animations
- Four-point recall rating system (Void, Hard, Good, Easy)
- Database management for creating, overwriting, and deleting decks and cards
- Progress tracking system for daily review performance
- Fully persistent storage for learning materials and progress data