Is Instagram's Feed View based on UIWebView or UITableView?

Question

It looks like UIWebView, but how do they implement that download progress bar and the section bar(very smooth scroll)...?

Answer 1

I have snooped around their logs, and I cannot guarantee that if the feed itself is a UIWebView, but it just so happened that when I went to the feed, a log message came up saying: "WebView loaded". This hints that they use a UIWebView for their feed.

I decided to do some research, and it seems I am not the only one who thinks that they might be using a UIWebView

http://www.lukew.com/ff/entry.asp?1499