If so, you're the first to ask for this, but it's a good thing to figure out! Please try this method:
2. Unzip it, so you get a folder called "apparatus-site-gh-pages".
3. Go into the "editor" folder inside there, and open the file "index.html".
4. A working Apparatus editor should open in a web browser.
Once you have these files on your computer, they should continue working even without an Internet connection.
I tried this out and it works for me, but it might go wrong on other computers. Please let me know if you run into trouble.
Or, if you have a different goal, please let me know. (Perhaps you want to run Apparatus without a browser? Apparatus is an HTML application which needs a browser to run. It might be possible to package it together with a browser, but I cannot see any real benefits to this. For instance, it is still possible to use Apparatus offline, even with a normal browser.)