I bring up the App Store on my Iphone, select the search icon and type "investors hub" into the search parameters and press the search button. The app appears and is listed as "iHub" by "ADVFN".
Just FYI, I upgraded my Iphone from iOS 6 to iOS 7 and had no issues with the application. The app still functioned without issue.
I do have automatic updates enabled on my Iphone, so the app may have changed since my iOS upgrade.