N4 Kanji Quiz, developed by Paditech, is an Android application that serves as a comprehensive study and training tool for learners preparing for JLPT exams (N4 to N5). The app includes complete kanji and vocabulary required for the exams.

Kanji are grouped by grade and JLPT and subdivided into sets of 20 for easy practice. The app also provides a list of example compounds for each kanji. Additionally, the reading test feature quizzes the user on kanji readings (onyomi and kunyomi). The app also includes a fun kanji game to make learning more engaging. For those who want to learn more kanji, the Extras store allows users to purchase additional features.

Overall, N4 Kanji Quiz is an excellent tool for JLPT exam preparation. The app is easy to use and provides a comprehensive study and training experience for kanji learners.