This APP can use an Android device to send signal to Osoyoo Arduino Robot Car V2 through Wifi. Osoyoo Arduino Robot Car use ESP8266 wifi Shield which can work either as a LAN client(node in Internet, ESP8266 STA mode) or as a Wifi hot spot(ESP8266 AP mode). In STA mode, Osoyoo V2 robot car is a real Internet of Things device and can be controlled by this APP through WAN and LAN remotely.