that path really didn't get me anywhere. But going into settings and scrolling down the list did bring up all my apps and it wasn't there. Howevever, after going to the app store and searching for that title, it seems it no longer is available?..at least I don't find it. So if an app goes belly up, does the app simply vanish from the phone? Seems like there should be a notification.If you go to Settings>General>Usage and scroll down the list of apps, is the missing one there? If it's on the list, maybe it's hiding in a folder on another homescreen? If it doesn't appear on the list, it's not on your iPhone.
You can use spotlight search to find the missing app if it's on your iPhone.