WeMo uses Wi-Fi to turn household devices.

What it does: WeMo uses Wi-Fi to turn an iPhone, iPad, or iPod touch into a remote control for household devices.

Why it's worth it: WeMo makes home automation simple. The WeMo switch, used in conjunction with the free WeMo app, lets you control any appliance that plugs into an electrical outlet. It runs over your home's Wi-Fi network and can be controlled with any iPad, iPhone or iPod Touch. You can use your phone to start your coffee maker as you come down the stairs in the morning, or turn on the lights before you get home. The app will also let you schedule devices to go on and off at pre-set times.

For $99, you can buy the Switch + Motion bundle, granting you motion-activated switch functionality -- simply walk by it, and it will activate the command. The sensor can read motion from 10 feet away and will turn on or off whatever is plugged into the switch. For instance, if it senses motion in the hallway, it can turn on a light or electric fireplace in the den. No motion for over 30 minutes? Turn them off. The app lets you create a rule or set a schedule