JLPT Grammar Bản Tiếng Việt is a free Android application developed by Bùi Xuân Hiếu, designed specifically for those who want to learn Japanese grammar. This educational and reference app provides a vast collection of Japanese sentence patterns that can be encountered in the Japanese language. It is designed to prepare users for the Japanese Language Proficiency Test (JLPT).

The app features overviews of various sentence structures, each accompanied by a phrase in Japanese with a parallel explanation in Vietnamese. The app also includes a search bar that helps users save time by quickly finding the desired sentence structure. Users can also view the history of words they have learned and save their favorite words and phrases for future reference.