This app allows PLC students (Electricians, apprentices and college students) to test their small homework assignments using their phone and explore basic PLC programming. It has input instructions, outputs, timers, counters, latches, unlatches and compare blocks, each rung is FULLY configurable with 6 instruction long and 4 instructions deep.
Features include:
- Interactive animations.
- Simple to construct and run PLC ladder logic.
- Save up to 20 programs.
- Includes 3 preloaded example programs that can be modified to see the affects of the changes.
- It’s FREE with NO ADVERTISEMENTS.

- Available for both Apple and Android devices.
--- (Makes it a great learning tool for instructors to help their students to learn ladder logic.) ---
Give it a try, I think you will like it.