* Create flashcards with front and back text fields.
* Group flashcards into knowledge collections with custom icons and earth-tone themes.
* Study cards using a 5-level spaced repetition system with intervals of 0, 1, 3, 7, and 14 days.
* Automated review scheduling based on card mastery levels.
* Dashboard showing total cards, due reviews, and mastered records.
* Local data persistence for decks and learning history.
* Animated transitions and gesture-based navigation throughout the interface.
* Drawer statistics for mastered records and pending reviews.