How to run an application in a different language? I have my Mac OS X Yosemite system configured in spanish, but I have an app with a horrible spanish translation, and I would like to run it (and just this app) in english. How could I do that?
So... there is two ways: change the main system language for some time or use this freeware, Language Switcher, which helps to launch single applications with a different language. Also you can try this variant - App Language Chooser.