1. From your home screen, navigate to your full app list. 
  2. Locate the your App and press and long hold on it. 
  3. You should now be able to drag your App to a location on your screen, but there should also be options along the top, including cancel, uninstall and App Info. 
  4. Drag the App to the App Info icon. This will pull up your settings screen.
  5. The version number should be beneath the name of the app.