1등급 사과 - 지구과학 is an Android application developed by CLASSDO. It is an educational app in the Education & Reference category. The app aims to assist high school students in their earth science studies, providing a chatbot, digital textbook content, and various solutions for effective academic improvement, such as AI mock test analysis.

The app offers several key features and services. Firstly, it provides a chatbot service where users can ask questions about unfamiliar concepts and receive written and visual materials to help them understand the keywords better. The chatbot also provides information about broader concepts related to the keywords, enabling users to grasp the overall context. Additionally, the app recommends related keywords and suggests further keywords to explore, enhancing the richness and efficiency of the learning experience.

Secondly, the app offers a digital textbook feature that allows users to review the core concepts of each chapter, similar to a traditional textbook. It includes a recent chapter viewing history and automatic progress tracking, facilitating continuous learning. However, the progress tracking feature is only available to registered members. The app also provides the option to adjust the text size for personalized learning and includes a chapter search function for easy access to desired textbook chapters.

Furthermore, the app offers a mock test analysis service, allowing users to input incorrect answers from previous mock tests to identify their weaknesses. This feature enables users to create personalized study plans based on their identified areas for improvement.

The app provides users with 10 learning passes and 10 chat passes upon installation, allowing limited access to the app's content. Free registration grants unrestricted access to all content.

Lastly, the app offers an app tutorial to guide users through its features, ensuring ease of use for first-time users.