I feel silly for having to ask this. I've got an application to a point where I want to send someone a beta to test on their machine, but I don't know how to get Xcode to produce a .app file for me to send to them. Help?
This has changed in Xcode 4.
Now Apps can be exported from the "Organizer"
If you haven't already, you need to create an Archive.
On the menu go to Product -> Archive
Once you're in the Organizer - Archives screen click Share or Distribute... (Xcode 4.3.3 or newer)
Then choose the format you want to export.
the app is generally under your
project_dir/build/Debug/Name Of App
project_dir/build/Release/Name Of App
project_dir/build/Distribution/Name Of App
depending on which configuration of build you did or want to send.
to get to the .app application you have to go into the folder where you created it into build the your app will be there
来源：https://stackoverflow.com/questions/1812650/how-do-you-export-your-finished-application-from-xcode