MaruMori is an Android application designed to facilitate Japanese language learning through a variety of engaging methods. It offers in-depth grammar lessons covering all proficiency levels from N5 to N1, making it suitable for learners at any stage. Additionally, the app integrates reading exercises and interactive minigames to enhance the learning experience, making it both informative and enjoyable.

The program includes a robust review system using spaced repetition (SRS) to help users master approximately 2000 kanji and 8000 vocabulary words. Users can also personalize their learning by creating custom study lists from the built-in dictionary. All content, including lessons and artwork, has been meticulously crafted by a dedicated team, ensuring high-quality educational resources that are continually refined based on user feedback.