Social sharing service Buffer has overhauled its iPhone app for iOS 7 to bring a range of new features and a redesigned social composer window, designed to give a roomier layout and better access to posting options. In addition to a fresh lick of paint,_the full-screen composer window now allows you to see options for posting to different accounts, attaching photos, and customizing the publish time without having to navigate away from writing your message. Buffer for iOS now offers support for posting to Facebook Groups (as well as Profiles and Pages, as it did previously) and brings a new...

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