Jan 15th, 2015 It’s here: Meet the official DeviantArt app for Android
If you're a registered user, you can access and manage your account from this app without any problems. You'll have all the features available on the official website now on your mobile device, including the ability to upload images directly from your device's memory.
Unregistered users can easily register from the application, though you can also explore as much as you want even without doing so. In the different tabs you'll find the most popular art of the moment, undiscovered art (ideal for finding new things), and of course a search bar.
DeviantArt is an excellent official app which is of the same high quality as the social network itself. What's more, unlike other apps of this type, it allows you to access virtually all of its content without having to register.