Hello Marilyn,

It sounds like your hearing aids are paired to the iPhone and when you activate an app it is listening through it.  I have resound too and what I do is swipe down the the quick screen where you can turn off Bluetooth, airplane mode, flashlight and other quick features.  There you can tell you hearing aids to disconnect from your app.  If that does not work turn off Bluetooth and that should work.  I’m just concerned it may cause the app to stop working depending what it needs to operate.  

I personally have not found a good speech to text app for the iPhone that I like to use.  I carry a hand me down old android phone without a cell plan.  There has an app called Live Transcribe.  Using that will not interfere with my resound hearing aids since it is paired to my iPhone.  ;)

I know it is one more thing to carry but it is what we have to do sometimes to hear better unfortunately.  :(

Dan