キオクル is a learning app designed for students preparing for middle school entrance exams. It offers an effective way to learn about the geography of Japan, which is essential for the exams.

With this app, you can learn while enjoying quizzes. It allows you to set the difficulty level from elementary basics to high-level questions, making it suitable for individual learning needs. The questions are presented rapidly, enabling you to cover a wide range of topics in a short amount of time. The app focuses on presenting questions that you answered incorrectly, ensuring effective learning. It also repeats questions that you answered correctly based on the degree of memory retention, solidifying your knowledge.

To use the app, first select the field you want to answer questions in. Initially, only "Prefectures and Regional Divisions" and "Mountains and Ranges" are available. However, by tapping "Purchase Questions" in the navigation bar and making an in-app purchase, you can access all the fields. You can also choose the difficulty level from "High-Level," "Middle School Entrance," and "Elementary Basics" in the top right corner of the navigation bar.

Once you have selected the field and difficulty level, solve the presented questions and learn. Tap the "Remember" icon in the center of the main screen and choose a course. You can select a course from "Random," "All Questions," and "Preview" in the top right corner of the navigation bar. Answer the questions given by providing the answers either aloud or in your mind. Tap the answer button to reveal the correct answer. If your answer is correct, tap the checkmark button; if it's incorrect, tap the X button. The next question will be presented, and you repeat this process.

For more detailed instructions, please refer to the Kiokuru website by tapping "App Support" in the App Store.