Hello,

I'm introducing Quickblox, a Backend-as-a-Service platform that provides modules for Mobile Applications, through native libraries for iOS, Android, WP7, (working on BlackBerry), and REST support.

The modules and code are really easy to integrate with existing apps:

-Users: Custom Data, Auth, integration with Facebook & Twitter
-Location: Users location and status, history, POI and check-in
-Chat: In App messaging, direct messages, integration with Facebook, Twitter
-Messaging: Push Notifications, Queue Message Management, Pop-Up Messages
-Content: CMS, Smart Caching and Streaming
-Ratings: Functionality for High Scores, Rankings and Social Ratings

You can check these both code examples for Android and iOS, the most awesome is the ChattAR, that integrates the existing modules with the forthcoming Augmented Reality module.

Try it for free!

* iOS – ChattAR: Augmented Reality Chat App that locates your Facebook (and App friends as well) in real time. http://quickblox.com/developers/Chattar
* Android – SuperSample: Location, Chat, Ratings and Users sample App. http://quickblox.com/developers/SuperSa ... 29_Android

Thanks!