小猿口算 is an iPhone application developed by Beijing Yuanli Education Science and Technology Co. Ltd. It is a homework-checking tool that covers various subjects, including Chinese, Math, and English. This application can help parents and teachers reduce the burden of checking homework. It was even recommended by the official program of Hunan TV, "Day Day Up."

The app has many features, such as quick photo checking, accurate correction of various types of questions, fun character recognition, animated courses, handwriting exercises, a vast database of exercises, and more. The app is designed to help students complete their learning cycle efficiently and systematically. Parents can use it to check their children's homework in seconds, and teachers can use it to reduce workload and improve efficiency. Moreover, it can also help children learn Chinese characters, improve their recitation of poems, and develop their interest in learning Chinese.