Google launches Mobile Backend Starter for iOS1
As you might expect from Google, Mobile Backend Starter lets developers support hundreds of concurrent users for free, because it is a Google App Engine application. Mobile Backend Starter makes it easy for developers to store data in the cloud and share it between users, send device-to-device push notifications, use continuous queries to notify devices of data changes, and authenticate users using Google Accounts.
Both the Android and iOS versions of the Mobile Backend Starter have the same set of features, and to do this, it will use the platform specific options for various functions. For example, it uses Google Cloud Messaging for Android and Apple Push Notification Service for iOS.