Xcode 6 Empty Application Gone
Xcode 6 removed Empty Application
As a workaround, you can add the old templates. Download files from here. Then place the directory inside the Xcode app- right click Xcode and select Show Package Contents:
{Xcode.app}/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Templates/Project Templates/iOS/Application/