WiFi Controller ESP8266 is a free Android app developed by mightyIT. It allows users to send and receive messages to an Arduino with an ESP8266 WiFi module using the TCP/IP protocol. With this app, you can easily connect to your device by adding its IP address and port.

The main features of WiFi Controller ESP8266 include auto connectivity with the last selected device, the ability to customize buttons for frequent data sending through long pressing, configurable sliders, and the option to monitor device responses. Additionally, the app offers a "Keep Screen On/Off" option and the ability to remove ads.

The default commands for the sliders in WiFi Controller ESP8266 are as follows:

• Slider 1: A0 to A255
• Slider 2: B0 to B255
• Slider 3: C0 to C255

With WiFi Controller ESP8266, you can conveniently control your Arduino wirelessly and easily communicate with your device using the TCP/IP protocol.