The Speech framework lets apps recognize audio commands as a supplement to taps and gestures. In addition, the Speech framework can also transcribe speech into text. By adding speech recognition features, your app can offer more ways for the user to interact in a natural manner that’s easy for everyone to do.
Before an app can use speech recognition, the user must give permission for the app to access the microphone and use speech recognition. You may also want to make your users aware that speech recognition may send audio data to Apple’s servers over the Internet to improve accuracy. ...