GoolRC is an Android application that allows users to control a quadcopter's flight and view real-time video stream from the camera mounted on it. The app also has additional features that include VGA, 720P, and 1080P video stream support, recording and capturing functions, photo and video playback, gravity sensor control, and VR display support.

The app is ideal for quadcopter enthusiasts who want to have a more immersive and interactive experience with their quadcopter's camera. With GoolRC, users can easily control the quadcopter and view the camera's video stream in real-time. The app's additional features offer users more options for recording and capturing their quadcopter's flights, as well as playback and control options.

For any questions or concerns about the app, users can contact the developer at Overall, GoolRC is a great app for quadcopter enthusiasts who want to have more control and functionality with their quadcopter's camera.