The download of the app is 100% secure. VULCAN Sp. z o.o. is the creator of Lekcja+ that can be found in the Educational category. On Google Play, the tool has been rated 1.5 by its users.
Over 50K users downloaded and set up this application and the latest release was on May 24, 2017. It's free to get the installer of Lekcja+, also, you can read users' reviews on Droid Informer. The app works fine on Android 4.1 and higher.