Talkler is very attentive. But sometimes you just want to be left alone. For those times, use the voice command, "Go To Sleep." Talkler will stop listening for voice commands in Sleep Mode.
FYI: Talkler stops listening automatically after 5 minutes of inactivity. (Adjust the timing in Settings.)
Note: Sleep Mode in Talkler is different from quitting or closing an app on your iPhone. Here is information from Apple on how to close any iPhone app.