The app's inadequacies and problems are only dwarfed by Google's goals to take every penny out of the consumers pockets by forcing one to buy expensive replacement equipment such as the Nest smoke detectors. Don't get sucked into buying Nest Protect products, the cost far exceeds their usefulness when compared to their price. We have 3 and now we are expected to pay out anouther $560 for items that work, but Nest/Google just decides to stop servicing & all three now need replacement, What a scam