title: iPhone push notification urbanairship, phonegap, c#
body: <p>I want to create an application which will be notified by server for new events. (lets say I have a shop and I need to inform all my iPhone users for my sales or something like this) Users who will download my application and run it and then put it in background wil have to be notified by this. Im quite new to iOS and Objective-C but if im not wrong this could be done via apple push notifications. Ive been reading about this and found out there are some providers that let you send this notifications. My question is, are there ways to create your own notification "center" in lets say c# and send notifications to iPhone-s by yourself, also if this could not be done are there any free providers? </p>
  
  <p>and another thing. In objective-c app you have to subscribe your app to listen to that kind of events. Could you create app in phonegap or some other technologies so it will work with notifications? could you lets say embeed your app in objective-c (like web app in objective-c)</p>