Roku is putting a remote control on your wrist -- the one that's wearing an Apple Watch, that is. The company's app is now out for Apple's wearable, and you only need to update your iOS app to version 6.1.3 to be able to get the free application. Like Roku's mobile apps, you can use the Watch application as a remote control for your device. You can launch channels, listed in order of most recently launched, on your TV by tapping on your Watch screen. And you can even control the volume with your Watch's circular crown.