Gobbler's 2.0 app will work with Mac OS X 10.13 and Mac Big Sur and Win 8.1 and newer.
It will also work, with limited functionality, with Win 7 if the most-up-to-date SP1 is installed.
A Legacy app is available for OS X 10.10 to 10.12 but is no longer supported: Legacy Gobbler app for Mac.
You have 3 options to download the installer for the app, described in our Downloading the Gobbler 2.0 app article. The article contains a link to the Legacy version of the app for Mac OS X 10.9 to OS X 10.12 users
The Gobbler Team