JLPT Vocabulary Handbook is a free Android app designed by Nahu Studio that provides a comprehensive vocabulary list for Japanese learners. The app is categorized based on the Japanese Language Proficiency Test (JLPT) levels, making it easy to navigate for learners of all levels. The app offers filters by verb, noun, adjective, and adverb, allowing users to customize their learning experience.

One of the app's standout features is the test quiz, which allows users to test their knowledge of selected vocabulary ranges. Additionally, the search feature makes finding specific words easy, and users can mark words as known or unknown to track their progress. The app also offers a favorite list, where users can save words they want to review later. Finally, the app provides the option to switch between Hiragana and Romaji, making it accessible to learners at different stages of their Japanese learning journey.

Overall, JLPT Vocabulary Handbook is a fantastic tool for Japanese learners seeking to expand their vocabulary. The app is informative, easy to use, and offers a range of features that make learning Japanese vocabulary an enjoyable experience.