Google has released their new Chromecast app for iOS today, which allows the user to manage their Chromcast from their iDevice. The Chromecast itself is a 35$ HDMI dongle which you can stream video from various services from an iDevice, Android device, or a computer with Google Chrome installed.
The full description is here:
Chromecast is the easiest way to enjoy online video and anything from the web on your TV. Plug it into any HDTV and control it with your existing smartphone, tablet, or laptop. No remotes required. Cast your favorites from YouTube, Netflix, Google Play Movies and Google Play Music and Chrome to your TV with the press of a button.
Use the Chromecast app to:
o. Set up your Chromecast to work with your Wi-Fi network
o. Manage your Chromecast settings (such as changing your device name, Wi-Fi password, etc.)