Gakujuu (学習), a Japanese word meaning "learn" or "studying," is an innovative flashcard app for iOS that utilizes the SRS (spaced repetition system) to assist with memorizing complex Kanji characters and vocabulary words. This intuitive app includes a vast collection of Kanji and vocabulary from Japanese Proficiency levels four, three, two, and one, making it ideal for both beginner and advanced learners. Additionally, users can easily add and look up Kanji and words and seamlessly integrate them into custom decks for personalized study sessions. With Gakujuu, mastering the Japanese language has never been more efficient or accessible.