Convert the "lite app" to "pro app" within the application

Question

I had two applications in the App Store. One is the free version, the other is the paid version.

I need to have a button in the application itself named "Upgrade".
Can we offer members the ability to upgrade from lite to pro within the app using in-App purchase, whenever a user clicks on that button?

Do we have any methods directly in iOS-6 ? Can we do this ?

Answer 1

Yes. You can hide all features in lite version those features you want to show in Pro version. Then when user click on upgrade button then on that button you write your in-app-purchase mechanism. Once user successfully purchase your up-gradation pack then un-hide those pro features in lite version. Then your app will become pro version. Now its completely depending on your logic and code skills how to hide and unhide features. See related links :-

Convert existing iOS paid app to freemium model with in-app purchase

How do I manage building a Lite vs Paid version of an iPhone app?