ZDF (Zweites Deutsches Fernsehen = Second German TV Channel) is one of Germany’s biggest public TV channels. Therefore it is no surprise they have a bunch of apps available on several platforms, one of which is the ZDFmediathek, which has been available for Windows Phone for quite a long time already. With ZDFmediathek users get access to most of ZDF’s TV shows and news, so basically it is nothing other than a video-on-demand-service. Now this app, has been updated to support live streaming, so users can watch the channel live, anytime, everywhere.
Recently there has also been a Das Erste app published. Das Erste (which is named such due to being the first German TV channel) also is a public TV channel and in the same network as ZDF. This app basically sports the same features as ZDFmediathek (only with Das Erste’s content, of course) and has had the live streaming feature from the very beginning. This free app can be found here. By the way, this is an universal app.