Get the installation package of IO.Ecologico 1.1 that is free and take a look at users' reviews on Droid Informer. The app is designed for Android 2.3.3 and above. It's safe to download this application. I&S Informatica e Servizi is the official developer of IO.Ecologico which can be found in the Communication category.
The developer rolled out a new version of the app on Oct 30, 2015 and over 100 users downloaded and installed this application.