title: Update ios app every time more data is available on server
body: <p>I have an app that needs to update every time a java web application creates more data. Simple enough, right?</p>
  
  <p>But I found out that my app can`t run in background to ask for more data periodically, and I think I need to use the push notification system. That seems to be overly complicated for a really small thing.</p>
  
  <p>And then, reading about it, I found out that the push notification can never arrive! For example, if the app is offline when the push notification is sent but is online a few moments later.</p>
  
  <p>So, in that case, how can I update the data? I only bring data from the server when the user logs in. I didn't want to do that every time the application became active...</p>
  
  <p>I guess there is a simple solution but this is my first app, any help would be appreciated.</p>