Users can chat to each other on the move.
ArenaNet is currently working on an app for users of the upcoming MMO Guild Wars 2.
While the app will not affect your game, users will be able to view what their friends are doing online.
Speaking to MMORPG.com, ArenaNet's Colin Johanson explained: "We have a team focused on things outside the game and so far we have an app where you can see on your phone or your iPad where your friends are currently in the game.
"You can watch them running around the map and see where they are going. You can also chat with them live, while they're in the game. For example while you're in the bus or a train, on your way home from work. This makes it easy to coordinate things and planning to meet up in the game etc."
ArenaNet has also confirmed it will be developing expansions for the new MMO.
A release date has not been announced.