I need to localiza a in development app for English & Spanish.

Despite the fact I follow the Apple way of use NSLocalizedString & create nibs for both, I already lost the track of the new string that need to get localized and found with surprise that I need to redo the nibs in spanish when I change the master.

(Just like this http://www.gigliwood.com/weblog/Cocoa/A_Great_Need_for_Be.html)

I wonder if exist a better/alternative/more automated way.

I know the use of gettext & poedit and wonder if something like that can be used.

Or if exist some script or tool for this.