The app is a comprehensive study tool for learning Japanese characters, including kanji, radicals, hiragana, and katakana. While the app is not entirely free, the free version offers unlimited study of beginner levels with no ads and unrestricted access to the dictionary and information screens. The one-time upgrade unlocks the remaining levels and allows for customization of study sets, while also supporting the ongoing development of the app.
The main features of the app include flashcard study, multiple-choice quizzes, writing challenges, quick search for kanji and words, and detailed information screens. With flashcard study, users can memorize kanji in manageable sets and view stroke animations, readings, meanings, and examples. The app also allows for customization of themes, layouts, and study ratings. Multiple-choice quizzes can be customized to show readings, meanings, example words, or sentences, and adapt based on the user's results. Writing challenges help improve kanji recognition and stroke order, with the option for self-assessment or stroke-by-stroke detection.
The app also offers a quick search feature for over 6,000 kanji and 180,000 words, with the ability to combine search criteria and see them highlighted in the results. Detailed information screens provide animated strokes, readings, meanings, and study stats for each kanji, as well as example words, sentences, and names. Additional features include studying kanji in various sequences, custom study reminders, native audio files for reading Japanese text, and the ability to save progress using Google Drive or local storage.
Optional add-ons for the app include guided study with unlimited use of the SRS module, graded reading sets for learning kanji through reading, and the Outlier Kanji Dictionary for understanding the logic behind the Japanese writing system. The app also offers translations in over 30 languages, with a volunteer translation project for those interested in contributing.
The app may require certain permissions, such as in-app purchases, external drive access for storing backup files, and network access for sending analytics. However, these permissions are optional and can be adjusted in the app's settings. Overall, the app provides a comprehensive and customizable study experience for those looking to learn Japanese characters.









