If you’re still suffering from the sticker shock of your last utility bill, Zstat might be able to take the bite out of the future ones. While not as sleek as the Nest. it costs considerably less and offers more safety features such as sensors for smoke, carbon monoxide, and air quality. It also comes in white or stainless steel and is easily controlled with the Zstat app or text messages. For at least $100, early bird backers get the version with the safety features and an expected delivery of August 2014.