The mobile armory app is very easy to use, well put together, and makes it a breeze when toggling through it's various menu options. Some benefits of using this app are searching the auction house for good buys, collecting all of your gold from sold auctions, and also creating auctions from ones that have expired, or that you have in your bags. You can speak with guildies, or notify someone that you will not make it to tonights raid. Very handy, and fun to kill time with.