CAR BT CTRL is a free Android app developed by sancochip semi-conductor co.ltd in the Utilities & Tools category. The app allows users to control their Bluetooth speakers using their Android devices as remote controls. It is specifically designed for customized Bluetooth speakers and sends customized commands to achieve some special functions.

The app is easy to use and has a simple interface. Users can easily connect their Bluetooth speakers with their Android devices and control them using the app. The app also allows users to send customized commands to their speakers, which can be used to achieve specific functions. Overall, CAR BT CTRL is a useful app for anyone looking to control their Bluetooth speakers using their Android devices.