CSJ GPS is an Android app developed by Zheng Xiang, available for free in the Lifestyle category. With this app, users can control their quadcopter to fly with a WiFi camera module and view a real-time video captured by the module. The app supports VGA, 720P, and 1080P resolutions, allowing for clear and high-quality video streaming.

In addition to controlling the quadcopter, CSJ GPS also offers the ability to take photos and record videos with the camera module. The app even supports 3D function, providing users with a unique and immersive experience. Overall, CSJ GPS is a great app for anyone looking to control their quadcopter with ease and view real-time video footage.