WiFi TCPUDP Controller is a free Android application designed for wireless communication using TCP and UDP protocols within local networks. It allows users to create custom button setups for controlling devices, such as PLC controllers, with a focus on flexibility and ease of use. Users can define button names, commands, visibility, and repetition settings and can store up to five different controller configurations. The app is optimized for devices with screens larger than three inches, with adjustable button sizes to enhance user experience.

The application enables communication with various devices, including Mitsubishi Melsec Q series PLC controllers, supporting input/output status reading and other functionalities per the MELSEC Communication Protocol. Users can easily back up their configurations in a common folder, with the data stored in CSV format. Notable features include permissions for external storage access, ensuring users can save and manage their settings effectively.