In the industry, the PLC is the most device because of its role, PLC is responsible for all the process in the automatization industry. In other words PLC is the brain. But this brain doesn't work if there's no tasks to do, so the PLC need some kind of code or language that it understands in order to do some tasks.
The download of the tool doesn't contain viruses or any kind of malware. DRS Apps is the official developer of this application that can be found in the Educational category. The most recent update of PLC Basics with SCADA and DCS Basics was released on Oct 12, 2020 and the app has been installed by over 50K users.
The tool has been rated 4 on Google Play. Ads are a part of this application. You are able to get the setup package of PLC Basics with SCADA and DCS Basics 1.70 free of charge and take a look at users' reviews on Droid Informer. The app works fine on Android 4.2 and higher.