Crashes and way too expensive for poor performance

Was looking for a life chord picker to detect songs which are not stored in my phone. That works poorly. Even more annoying that it always crashes when I want to detect a song from my itunes library, even on latest iOS version on a 6s.

And for this you should pay nearly 10€??

Jeder spitzname vergeben??? about Guitar Chords - tomChord, v2.2.1