After downloading and being confused trying to find how to use the translator thing form the video I realized that I'd downloaded World Lens rather than Word Lense... Anyway, yea, the free app reverses words, which isn't really helpful. I paid the $5 for the spanish to english language pack, which is the only one available right now (except for English to spanish). Definitely isn't as smooth as it was in the video but I was also trying to make it read a whole page all written in Spanish so it was probably, like I would be, irritated.
It does work though. I wish I had this while I was still taking Spanish classes.