Goukaku

Goukaku is a practical learning app that supports offline study and centers on JLPT N1–N5. It offers a rich library of tests across vocabulary, grammar, reading, and listening, with the option to select one or more subjects and use repeated listening to reinforce listening skills. The app emphasizes a simple, intuitive workflow for efficient study.

The tool tracks learning frequency, subject mastery, and historical scores so you can view your progress at a glance. It also supports offline mode, making it easy to study anywhere without distractions. Goukaku is the romanization of 合格, meaning pass the exam, which reflects the app’s goal of helping you reach your JLPT targets at levels N1 through N5.