开放在线 is an iPhone app designed to cater to students' educational needs, offering course materials, teacher-student interactions, exam preparation, and more. It provides a user-friendly learning experience by delivering mobile courseware, timely announcements, and reminders. The app ensures a well-structured distribution of knowledge points, offers meticulously crafted course content, allows students to watch videos, take quizzes, and engage in interactions with teachers.

Moreover, it offers exam preparation services such as practice at exam centers, simulated question papers, and detailed answer analysis to help students learn problem-solving techniques and approaches while practicing. Additionally, the app synchronizes learning records across mobile devices and PCs in real-time, enabling users to effortlessly track their learning progress.