title: Apple Push Notification Service, Group notifications together
body: <p>I have searched through all of apples docs for their push service.  The app I am designing sometimes pushes many notifications.  These notifications are very useful if you are <em>inside</em> the app, because they serve to update the UI.  However, if you are <em>not inside</em> the app, you will collect many notifications on the home screen, which is just a bad user experience.</p>
  
  <p>I would only like to tell the user about a type of notification once if the app is not open.</p>
  
  <p>Google has a very similar concept, called a Collapsible Key, as seen here:
  <a href="http://developer.android.com/training/cloudsync/gcm.html#collapse" rel="nofollow">GCM Messages</a></p>
  
  <p>Basically, notifications can be grouped, and collapsed so only one of each type is displayed.  I am trying to find a way to do this, or emulate the behavior someone either client or server side.  Thanks for the help!</p>