As long as it is for your own use, there is nothing that forces you to do any licensing related stuff (this is about OpenG, or other Open Source, use of commercial software needs of course to obey their licensing requirements even for personal use). But once you distribute your app, commercial or not, you need to comply with the Open Source licensing requests and this means you need to add some credit information for compiled apps or leave the source code intact in the distribution.
Chances that a coworker is going to fuss about this if you let him use the compiled app are rather small, but you are strictly speaking in violation of the OpenG license if you don't add some credit information somewhere in your compiled app. If however you distribute the whole thing in source, that already fulfills the license requirement.