title: Alternative to NSDistributedNotificationCenter for comms between iPhone apps
body: <p>I've been looking for a way to compare timestamps between applications on the same phone in real time, and NSDistributedNotificationCenter sounded like an ideal solution since i may not know the names of the apps listening for it, but it sounds like its not available in iOS.</p>
  
  <p>Is there an equivalent way of notifying multiple apps of a time-sensitive event without knowing their name? </p>
  
  <p>Coding for iOS 5+ and assuming the apps in question will register for the notification.</p>