If you have an M1 Mac, download the application here.
For Intel Macs, download the application here.
Related Help Articles:
Features of the Simon Says Mac app (a visual guide)
How to receive video proxies on Simon Says website from the Mac app
How-to: getting started with the FCP X Extension (video)
Steps to install/uninstall our FCP X Extension / MacOS app
Supported Imports (FCP X Ext/Mac app)
Why a Simon Says Mac app / FCP X Extension?