If you'd like to manage several thermostats and/or multiple homes simultaneously, the Nest Learning Thermostat is more full-featured. You can operate three homes seamlessly from the app or website. Plus, you can step back and let it learn your habits to automate your home's comfort. On the other hand, if you're looking for a smart thermostat at an affordable price, the Nest Thermostat is the more affordable of the two. It doesn't have as many bells and whistles as the Nest Learning Thermostat, but at only $129.99, you'll have a stylish, user-friendly thermostat that can help you lower your energy bills.