I am a new iPhone user, because Apple has formed an amazing partnership with Cochlear Corp (hearing-implant devices), so I can directly pair my cochlear implant with my iPhone. The app for this is called Nucleus Smart, but it has pretty limited functionality.
One issue is that when I open any app that can access sound, it switches automatically to my hearing aid. For example, even my solitaire app, with the sound option turned off, will still automatically turn on my hearing aid, and essentially mask all regular environmental sounds with the muted audio.
The developers of the app aren't particularly responsive, so I'm wondering if there is another app that can block app access to any sound output.