PLC Simulator 2 Ladder Logic is a free iPhone app designed for PLC students, electricians, apprentices, and college students to practice and test small homework assignments on their phones. This program allows users to explore basic PLC programming with features such as input instructions, outputs, timers, counters, latches, unlatches, and compare blocks. Each rung is fully configurable with 6 instructions long and 4 instructions deep, providing a comprehensive learning experience.

The app offers interactive animations and a user-friendly interface for constructing and running PLC ladder logic. Users can save up to 20 programs and modify the 3 preloaded example programs to observe the effects of changes. With no advertisements, PLC Simulator 2 Ladder Logic is an excellent learning tool for both students and instructors.