YouFS APP is an APP developed by Shenzhen Yongfengshun Technology Co., Ltd. for electric scooters, lithium trams, bicycles and other controllers. Automatically by the mobile phone bluetooth wireless connection electric scooter, the connection is successful after can get a lot of information to the vehicle on the mobile phone APP can be remotely lock the car through the APP, remote positioning, access speed, power, light condition, gear, total mileage and the mileage, riding time, boot mode information such as temperature of the battery voltage. The speed of each gear can be adjusted in the setting, and the fault status of the vehicle can be checked through the fault self-inspection, which is convenient for maintenance.