The app's interface is very simple: from the drop-down menu on the left you can access 9GAG's different categories, such as GIF, NSFW, WTF, cosplay, or food. By default, you'll see the main page.
From the 9GAG app you can rate different photos with a positive or negative vote and even leave comments. You can also share images through any social network, like Twitter or Facebook.
This app is the best way to enjoy all 9GAG content from your Android device. And since there's so much content on 9GAG, that is really saying a lot.
Requires Android 2.3.3 or higher