For the best XDA experience on mobile, try XDA Labs, now in beta: http://xda.tv/labs *Please clear app data after installing v4.0.x if you encounter login issue (settings>apps>xda premium>clear data)*
This app lets you access the world-famous XDA forums, plus reply to threads, add new ones, manage your PMs, and more!
The premium XDA app is ad-free and has additional features versus the free XDA app.
Please note: XDA Premium works best over WiFi or high speed cellular data. The first load might take the longest even if you're on WiFi.