IP Display is an application that displays your current IP information. It is similar to the old winipcfg tool that came with ancient versions of Windows. It's basically just the main screen from TrueIP without any of the extra notification features. It doesn't run in the system tray or in the background at all. It just pops up a dialog showing you your current IP information. When you close it, it's closed.

In addition to showing local IP information, it will show your true external address if your computer has internet access and can access the HazteK Software website.