While setting up a new app in Xcode, I noticed there’s a “more languages” submenu in the localization section. To my surprise, it includes Klingon (but I guess it shouldn’t be a surprise, as Klingon has an ISO code).
And indeed, I was able to switched my iPhone to Klingon, but alas, there were no Klingon words in sight.
On the other hand, that means there’s an opportunity here. Be one of the few (or only?) Klingon-friendly apps!