Source Code ~> http://cdn1.raywenderlich.com/wp-content/uploads/2012/09/InstagramFinal2.zip

In this tutorial, you’ll learn how to make a simple photo sharing app, like an extremely simple version of Instagram. In particular, you’ll learn:
Using a blank startup project that has all the UI already set up, this tutorial will cover how to:
How to connect to a JSON-based web API in Objective-C
How to create a simple JSON API in PHP
How to implement user authorization for the API
How to take photos, apply effects and send them over to the JSON service.

Part 1 ~> http://www.raywenderlich.com/13511/how-to-create-an-app-like-instagram-with-a-web-service-backend-part-12
Part 2 ~> http://www.raywenderlich.com/13541/how-to-create-an-app-like-instagram-with-a-web-service-backend-part-22

Source Code Part 1 ~> http://cdn1.raywenderlich.com/wp-content/uploads/2012/10/iReporter_web_complete.zip
Source Code Part 2 ~> http://cdn2.raywenderlich.com/wp-content/uploads/2012/05/iReporterStartupProject.zip