The app helps the smart smoke detector track battery life and sends you notifications to replace the battery before it starts to chirp in the middle of the night. It also lets you monitor conditions in your home, hush false alarms and test your devices remotely. If something happens when you’re not home, you receive an alert on your smartphone. Smart Home CompatibilityEach smart smoke alarm in our comparison can be used as part of a larger smart home system. If you already have a smart hub in your home, make sure the smoke detector you buy is compatible. The best devices work with a variety of platforms like Nexia, Vera, Wink, Google Home, Apple HomeKit and more. More Smart Home Guides:The Best Smart Door LocksThe Best Smart ThermostatsThe Best Home Security SystemsThe Best Home Security CamerasThe Kidde RF SM DC Est. $35 is a top choice in this category. Also known as the Kidde 0919 9999, the RF SM DC has been professionally tested by Consumer Reports. While, like all ionization detectors, it scores poorly in detecting smoldering fires, it's a top performer when it comes to alerting you to flaming ones. User feedback is strong, and it gets good overall scores from owners posting to sites such as Amazon, where it earns a 4.