IPS
does not have an official uninstaller for Invision Download Manager; whereas they do have one for IP.Gallery. I found the lack of this to be a bit disturbing as I was working on redoing my site earlier this morning, so I went and asked support for the gallery uninstaller. From there, I used that as a template to create the brand-new IDM Installer; and we now have what you see here today!
Since this is the first release; it will be updated as IDM changes with each new version. I will also make minor enhancements to the uninstaller from time to time. And yes, I know it's rather blah looking for now; but I just wanted to get it out there, to fill the void; so to speak.