교과100 중등 is an educational app designed for middle school students, available on Android devices. This free application provides a structured learning environment that focuses on mathematics and science subjects, offering a variety of features to enhance student engagement and knowledge retention. Users can create personalized profiles by logging in and inputting their grade level and nickname, allowing for tailored learning experiences.

The app includes a range of learning resources such as '꼼꼼개념학습' for concept mastery, '탄탄기본문제' and '도전심화문제' for problem-solving practice, and '마무리단원평가' for performance assessment. Additionally, lecture videos are available for users to revisit challenging topics. Users can track their learning progress through subject-specific reports and a learning calendar, providing a comprehensive overview of their academic journey.