It's safe to download the app. Jemasoft bvba is the developer of VGT-DPI which relates to the Books & Reference category. The most recent update of this application was launched on May 12, 2014 and the tool was downloaded by over 50 users.
It's free of charge to get the installer of VGT-DPI, also, you can take a look at users' reviews on Droid Informer. The app runs on Android 2.2 and above.