One more item on ThemeClick.com on this category.
Write Messages to your App from your WordPress Backend
Write messages with Google Cloud Messaging directly from your WordPress Admin Page to your App.
Full list with Features
messages to all devices
registration information like device model and os, or date, send messages
useful stats with animated charts
export function to export the entries to an excel readable file
automatic GCM messages when new post is released or a post was updated
link in the admin bar
translation ready with provided german translation and a .pot-file for translation
Sample Android App with comments in code
Documentation with examples and step by step tutorial
Every function could be activated or deactivated in the settings page of the plugin
Write your own function with your own information (like to notify your app that it should update its content or something like that). The plugin is very customizable for any need. It also handles the limit set from Google which allows only 1000 recipients for a message.
- initial release We are sure after from the success installation from this item WP GCM to your website you will be very satisfied