PlcEdit is a free mobile application that enables users to program and learn about Programmable Logic Controllers (PLCs) on their Android devices. Developed by XingYuWangLuoKeJi co.ltd., it supports Mitsubishi, Panasonic, and Siemens series. With PlcEdit, users can write and save PLC programs, upload files to their computers, and simulate PLC procedures on their phones without connecting any devices. The app provides various examples, including traffic lights, elevator control, and three-phase alternators/asynchronous, to help users better understand the function of register operators. PlcEdit also features an operating panel for easy viewing of registered variable values. This app is widely used by students, teachers, and PLC engineers, making it a valuable resource for learning and teaching about PLC programming.