FAQ #8008, published on 2013-09-30
Which version of Xcode is required for IOS 7 ?
You may use both version 4.6.3 and version 5 but the result will not be identical, because the status bar is not handled in the same way. In IOS 7, the status bar is transparent and is not a part of the screen.

- if you compile with Xcode 5, the status bar might be displayed on top of your own control. To prevent this, you may shift your content by 20 pixels, in order to save space for the status bar (see FAQ 8007 for details).

- if you compile with Xcode 4.6.3, there is no need to change anything. Your app will look the same as before.
See also : IOS7, Xcode