title: Running background task on startup
body: <p>I'm writing an iOS app that uses the Dropbox Datastore API to sync data across multiple devices.</p>
  
  <p>On Android, I'm able to tell the service to start on boot, which enables it to sync any changes that may have occurred whilst the device was turned off.</p>
  
  <p>I'm having trouble finding a definitive way to have my app do the same on iOS.</p>
  
  <p>So, does anyone have any recommendations to:</p>
  
  <ul>
  <li>Run a simple background service efficiently and dependably on iOS.</li>
  <li>Have the service start at boot</li>
  </ul>
  
  <p>This must be possible - apps like Facebook and Gmail start syncing as soon as the device finishes booting.</p>