Group messaging service GroupMe has just been bumped up to version 4.0, and now plays well with the iPad. The refresh may not be as profound as the last big one, but brings with it a slew of design revamps, including Facebook app-inspired side drawers, bigger images and avatars, and centered chats. In addition, the app also allows sharing location using maps, inviting people to groups using URLs and rejoining previously abandoned groups. BlackBerry and Windows Phone users of the app can't board the freshly-painted bus just yet as the update is only available on iOS for now, while those on Android can get a taste via a beta that needs to be sideloaded atop the older version. There are other services vying for your attention too of course, with WP8's Rooms already open and RIM promising big things on BB10. However, if this sounds like what you covet, use the source links below to get in on the action.