The download of the app is 100% safe. KERN AG, Sprachendienste is the creator of KERN Sprachtrainer Englisch that refers to the Educational category. According to the latest information, the tool is rated 3.7 on Google Play.
This application has been downloaded and installed by over 5K users and the latest update is dated Dec 4, 2013. It's free to download the installation package of KERN Sprachtrainer Englisch, also, you can take a look at users' reviews on Droid Informer. The app works fine on Android 1.6 and higher.