What is Difference between Storyboard and XIB!

STORYBOARD

In simple words Storyboard is one single file for all the views or screens that in yours apps.
It transitions one screen to another screen.
It minimizes (reduces) the number of files in your apps.
Storyboard can put the XIB files.
Storyboard is universal; that means your apps can run both iPhone and iPad.
In Storyboard you can also used XIB if you need it in Storyboard.
Storyboard contains all the controllers, like tool bar, view controller, ant tab bar.
Storyboard is good for seeing how the controllers connect to each other.
In Storyboard merging the view and controller is very easy.
If you don’t want to use Storyboard when creating a new project then you can avoid it by unchecking the Storyboard option.

Disadvantages of Storyboard

There are so many disadvantages to using Storyboard that are explained here.
Not compatible with pre iOS 5.
In my opinion, in Storyboard it is hard to work if the project is too long because every member in a team modifies and updates the file.
In Storyboard if you have too many views then Storyboard can be confusing.
It is less flexible.
In Storyboard you don’t have a file owner.
In my opinion Storyboard is a loosely coupled object into a big file.
In Storyboard using table cell is better then XIB because it gives more flexibility.
In Storyboard it is not easy to handle if you have a large amount of code. It is useful only for a small amount of code.

XIB

XIB is Mac OS x interface builder. It allows Cocoa Touch and Carbon Touch.
In XIB the result is stored as a NIB file.
It is the part of X code.
In XIB there is no flow of control and transition between the view and controller.
In XIB modularity is done in a very nice way.
It contains item like buttons, text fields, labels.
In XIB it gives you more flexibility, and simplicity in terms of code.

Disadvantage of XIB

There are many disadvantages of XIB that are explained here.
In XIB if there is any bug in making a connection then it is to hard too debug.
In XIB merging is too difficult compared to Storyboard.
In XIB if we have a dynamic view then it is hard to read compared to Storyboard.