I just downloaded it, but I don't really get it? Where are you supposed to see words? In the down right corner? A blue dot popped up behind my right shoulder and the app said 'fffffffffffffffffff-----jjjjjjjjjjjjaaaaaaaaaaa----ffffffffffff' :') And now everything's gone and it says nothing.
"Ja" means "yes" in Dutch by the way, not sure if that means anything though, because, like I said, I don't know if that's where words should be.
Just as I looked over my shoulder it disappeared by the way, and hasn't come back yet. :P
Edit: Well they really seem to have trouble handling the app hehe. I just got a green thingy and 'ffffffff-nnnnnjjjjjjccccccc'. Now it's gone again. Strange app.
Edit AGAIN: I got 'CAME' and 'FAIR'.