Looks really good, and it's a very nice way to view the photos. I like that you also implemented a way to like and comment on the photos. Very engaging and fun.
I also like the design a lot.
Doesn't Facebook have a policy against "alternative ways to view Facebook" type applications? Didn't I see a conversation on HN the other day about a guy who got blacklisted for life for making an ads free version of Facebook or something like that?
Anyways, good job