Xcode 4: Finding the Application You Built

Previous versions of Xcode created a build folder inside your project folder and placed your application there. Xcode 4 stores build products in the following location:

/Users/Username/Library/Developer/Xcode/DerivedData

When you build the project, Xcode creates a folder for your project in the derived data folder and places the files it creates in that folder. If you want your derived data in a different location, open Xcode’s Location Preferences. Choosing File > Project Settings lets you change the derived data location for a single project.

Update #

You can also open the folder where your application resides using the Xcode project window. Click the disclosure triangle next to the Products folder in the project navigator. Select the application, right-click, and choose Show in Finder.