A german keyboard would be great!
If you have downloaded English (or some other language with a QWERTY layout) together with German and want to enable the QWERTZ layout for German go to SwiftKey X Settings > Languages & Layouts and press the keyboard—like icon next to German. Then select QWERTZ from the list of available layouts.
thank you very much for the advise, it wasn't clear, that the icon is a button!
great work with the keyboard, was definitely worth buying it!