猿题库-中小学生刷题利器 is an educational app developed by Beijing Yuanli Science and Technology Co. Ltd. It is a product of "Yuantiku," an online education company with over 400 million users. The app offers a wide range of practice questions for students in primary and secondary schools, covering subjects such as math, English, Chinese, physics, chemistry, biology, politics, history, and geography.

The app provides a comprehensive collection of selected practice papers and exercises, along with professional analysis and guidance to help students conquer difficult topics. It has received rave reviews from students, with many praising its effectiveness in exam preparation. The app also offers real-time question reports, allowing students to analyze their weak areas and improve their knowledge. Additionally, it features a vast collection of past exam papers and mock tests, making it a valuable tool for overall revision. The app's high-quality answer explanations provide detailed step-by-step solutions and clear problem-solving strategies, enabling students to grasp various learning methods. It also includes an automatic error sorting feature that categorizes mistakes by topic, facilitating targeted review. Furthermore, the app offers online live courses taught by experienced teachers, allowing students to learn and practice simultaneously and providing unlimited replays for better understanding.

Overall, 猿题库-中小学生刷题利器 is a comprehensive and user-friendly app that offers a wide range of practice materials, expert guidance, and valuable features to help students excel in their studies.