- Remote control, with the free Nest app for iOS 8 or Android 4 or later- Check your energy history with the Nest app- See how much you save and see how to save more- Energy-efficiency, start saving from day one- Conserve energy when you're away with home/away assist- The thermostat turns itself down after you leave, so you aren't heating or cooling an empty home- Consume less power with a built-in rechargeable lithium-ion battery