Anki is a popular flashcard application designed to help users memorize information efficiently. It uses a spaced repetition system, which means it schedules reviews of flashcards based on how well the user knows each card. This method enhances long-term retention of knowledge, making it useful for students and professionals alike. The app allows users to create their own flashcards or download pre-made decks on various subjects, such as languages, science, and history. Available on multiple platforms, including Windows, macOS, iOS, and Android, Anki provides flexibility for users to study anytime and anywhere.