ReddX on Xbox One lets Xbox Live members in the U.S. and Canada check out every subreddit in addition to a customized main page. You can read text and view images, videos and GIFs on your TV and can even zoom in or out of text and images for a closer look.
Using ReddX also allows you to upvote or downvote a thread with just the touch of a button, as well as easily add your comments using your Xbox One controller, media remote or Xbox SmartGlass on your smartphone, tablet or laptop. If you find an image that’s just too good to pass over, ReddX lets you save a photo to your profile or set any image as the background for your ReddX app.
The big question here is whether or not this will be more or less popular than the "one and done" novelty that was the Twitter app for the Xbox 360.