It is an app that lets you view all of your forums through it ( the forum also has to have it activated ). In my opinion it is much faster because it is very basic. Give it a try. Search tapatalk forum in market.
Ages ago they had a free "read only" version, but has since been pulled. I've used it almost every day since I bought it (for my old iPhone). The latest update actually crashes frequently, but the convenience is still worth it. Heck, I've only ever visited the desktop version of this forum two or three times!