Build a PLC with STM32 Nucleo-F401RE board, Industrial I/O expansion board and Wi-Fi expansion board With these boards and X-CUBE-PLC1 you manage I/Os at 24 V, timers and counters, with a Ladder logic interface.
STMicroelectronics NV is the official developer of ST PLC App which can be found in the Productivity category. Over 5K users downloaded and set up the tool and its most recent release was on Apr 13, 2017. Users rated this application 4 on Google Play.
Use the opportunity to download the installer of ST PLC App 1.0.1 for free and check out users' reviews on Droid Informer. The app is available for Android 4.1 and higher. The download of the app doesn't contain viruses or any kind of malware.