KORON PASSPORT is an Android application developed by 立花書房. It is a learning service designed to help users pass promotional exams. In addition to providing question-based learning, the app offers features such as learning management and targeted weak area improvement.

The app includes various learning activities such as multiple-choice questions, true or false questions, audio books, and visual aids. Users can review the questions they answered incorrectly through the "Weak Area Improvement" feature. The "Performance" section provides a radar chart that visualizes the proficiency level in different subject areas, allowing users to compete with other learners through rankings.

The "Today's Training" feature offers daily questions, providing users with the opportunity to practice over 1,000 questions throughout the year. KORON PASSPORT also offers several learning services, including practicing the 50 questions from the actual SA (Police Administration) exams, learning the basic four laws through audio books, and studying simplified essay writing.

This app is recommended for individuals who want to make the most of their spare time during commutes or waiting periods, manage their learning progress, overcome weak areas, or approach studying in a more gamified manner. It also allows users to compete with colleagues and nationwide exam takers to gauge their learning proficiency.