Note that Facebook went from an HTML 5 iOS app to a native app. See this post: https://www.facebook.com/notes/facebook-engineering/under-the-hood-rebuilding-fac

Note that Facebook went from an HTML 5 iOS app to a native app. See this post: https://www.facebook.com/notes/facebook-engineering/under-the-hood-rebuilding-facebook-for-ios/10151036091753920 https://www.facebook.com/notes/facebook-engineering/under-th...