On top of what DooLittle said, it formats it for your phone. When I just go directly to the website via internet on the phone I have to constantly zoom in and out. Scroll through the different forms wait for the brouser to reload, especially if you arent connected to WIFI. With the app it has a side bar that organzies the threads, I just just quickly view what I want without having to zoom. It will notify you if someone sends you a PM, quotes you, or replies to a thread that you have subscribed to. It is basically just an ease of use thing.