Lớp Học Trực Tuyến is a free Android application developed by Võ Duy Tuấn that provides video conferencing services for businesses, schools, and training centers. The app allows users to have remote conversations, share information, and teach lessons to students through video conferencing.

The app offers interactive tools such as hand raising, chat functions, and live video streaming. Users can interact with their teachers and classmates in real-time, making the learning experience more engaging. The app also supports multiple users in one video conference room.

Overall, Lớp Học Trực Tuyến is a convenient and user-friendly app for anyone who needs to communicate and share information remotely. It is an excellent tool for businesses, schools, and training centers that require video conferencing services.