Hey FuzzyMonkey,
There’s no app, but if you open it up in your browser, you can add the shortcut to the home screen easily enough. If you view the site on your mobile device, it will adjust the site to be more mobile-friendly.
Here’s how you’d do that on an iPhone: (click the link to view the video)
I’ll make a video later on how to do it on an Android device – unless someone wants to make such a video first I know in Chrome, for example, you can hit the ‘hamburger’ menu and click on where it says something like “add bookmark to home screen.”