With the latest version of the iOS app (as of this date) on an iPhone 5S running iOS 8.1.2 clicking on the “Saved Stories” widget with zero stories saved will crash the app. I believe in previous versions of the app the widget would not show up if there were no saved stories.
Clicking on the widget with one or more saved stories works correctly.
Also, I would suggest that you add the apps version number somewhere (Preferences?) so it can be reported in these get satisfaction posts.