The basic setup is simple. Set the "agent" - that’s the contact’s telephone number that should be informed in the case of an emergency. Next, place the phone at the place that you want to monitor, for example next to a baby.
From now on, the application will constantly monitor the audio level of its surroundings. If they exceed a pre-defined threshold, the phone will automatically call the agent. As a normal voice call is made, you can now hear the surroundings of the phone in order to judge if something serious is happening.
Free Download: here