By web version I'm guessing you mean server side?

Server side was a few python components with lots of tricks in Postgres for scaling purposes. You didn't have any real choices for what language you used in iOS

Yes, that's what I meant. The point I was trying to make was that just knowing server side scripting was a necessary but not sufficient condition to create a hit photo sharing app at that time, because there weren't many options on the camera at the time, and the filters were what drove the growth at that time.