This download is completely safe. Starikov Mark is the developer of Справочник школьника PRO that can be found in the Educational category. Users rated the tool 4.2 on Google Play.
This application has been downloaded and set up by over 100 users and its latest update was released on Dec 7, 2018. You can get the installer of Справочник школьника PRO 1.0.1 for free and check out users' reviews on Droid Informer. The app works fine on Android 4.1 and higher.