The service, which you used to know as 4OD, will arrive on November 24 and let you beam Channel 4 content over Wi-Fi to your TV using an Android phone or tablet, or even the Chrome browser. It will be available on the All 4 iOS app from mid-december.
All 4 offers live and catchup content from Channel 4, and joins several other streaming serves on the device including BBC iPlayer, Spotify and Netflix.
Google's Chromecast got a refresh in September to make it faster while keeping the price down to just £30, making it a respectable rival to Apple TV and Roku.
It also got a new sibling, Chromecast Audio - a dongle that lets you stream music straight from your phone to a speaker.