This app does not do anything by itself. It has no user interface and no icon will appear in the launcher. When it is installed, Music Trainer (https://play.google.com/store/apps/details?id=com.profittlich.android.musictrain) will not display ads.
Before purchasing this app, try out Music Trainer to see if it suits your needs.
This is the first release of the Ad Remover. If you experience any problems, please contact me, so I can resolve them.