The recently launched STARWAVES DRM SoftRadio App is what you are looking for presumably: http://drmsoftradio.starwaves.com/
As far as we are aware, it is the only app giving support for all the many core features of DRM like: advanced xHE-AAC audio, DRM TextMessages, Journaline, station logos, Emergency Warning Functionality (EWF), Slideshow, Unicode Support ( for accessing text in various languages).The reception quality largely depends on the USB-Dongle and (especially for shortwave) also on the antenna. According to our experience the AirSpy Discovery does a great job: https://airspy.com/airspy-hf-discovery/ but there might be other solutions on the market as well.