@Herko-ter-Horst
But all of this is easily solvable. Let the developer give us a table of words/phrases that need to be translated.
Croatian/Bosnian:
Left = Lijevo
Right = Desno
In = Nakon
...and so on.
Then, regardless of the selected language on the phone, or whether it is supported as main, if there is a translation, it will be pronounced correctly. After all, we are talking about approximately a few dozen phrases, if that many.