This is a great tool for Healthcare Tech Geeks. In the real world for healthcare professionals, no one will have time to whip out their iPhone and listen (if you can) to the promptings of the iPhone. Plus with this new emphasis for Hands-Only CPR. Everyone will know if a person doesn’t wake up when you shake them, easiest thing to do is jump on their chest and do compressions. Who cares about the airway and breathing, Push Hard and Fast, that’s all you need to do. These new medical tools for iPhone just gets in the way of keeping things simple. Word of advice too, never get CPR training from an iPhone, get training from a professional, Please.