The dictionary works as expected, and I was pleasantly surprised when I discovered that it corrects Serbian words even when written in Latin script (i.e. not just in Cyrillic) - my advise to you would be: *advertise that fact!*
I gave it 4 stars because the number of words in this spell checking dictionary leaves something to be desired (and I probably used "Add to dictionary" feature far too often). I hope it's the work in progress.