Question Why can't I get an audio input in the PolyTune App Answer When starting up PolyTune for the first time on iOS7 (and higher) it says "PolyTune would like to access your microphone." and gives a dialogue to accept or not. If you did not accept the first time the app was started, you will have this issue.  To Resolve this, take a look under:
  • Settings > Privacy > Microphone
  • Make sure that the little slider is engaged (green background).
If it's not, then PolyTune would not be allowed to use the mic by the OS.