Meet the Zuli Smartplug: a smart tool that lets you control your lights, appliances, and Nest from your iPhone. Zuli turns any lamp into a dimmer. It knows when you are in a room to choose the best lighting and temperature settings. The device also lets you monitor energy usage in your home.
Zuli is compatible with iPhone 4s, 5s, 6, 6+, 6s, and 6s+. It makes your existing appliances smarter and notifies your Nest Thermostat when you get home. Costs under $50 at this time.