I have designed a group of views using code and Interface builder on iPad running iOS5. The IB use the MainStoryBoard_iPad.storyboard. Now, I will like to use the app on iPhone. I didn´t think I will do this port, but now I want to do it.
Option 1 I have tried to, copy the MainStoryBoard_iPad.storyboard, rename to MainStoryBoard_iPhone.storyboard, and launch the app. This work for code, but IB has different ratios, positions, and sizes, and the interface don´t look well.
Option 2 I have tried to, copy view, elements, from ipad, and paste on the iphone storyboard, but is not possible, and i think will occur the same thing, problems with sizes.
Someone knows if exist a semi-automatic method to do it?
I consider apply a reduction factor to all app sizes and position, but i have a lot of values to change.
I think you are out of luck for a semi-automatic method.
Here is a tutorial describing iPhone to iPad translations. http://www.raywenderlich.com/1111/how-to-port-an-iphone-application-to-the-ipad
Hope it helps.