It's safe to download the app. Gaby Müller Training & Coaching has developed LernBar that falls into the Educational category. The tool has been downloaded and installed by over 50 users and its latest update was released on Aug 2, 2018.
This application has been rated 4.6 on Google Play. Use the opportunity to get the setup package of LernBar 1.15 free of charge and take a look at users' reviews on Droid Informer. The app is available for Android 4.1 and higher.