I created an unofficial Mac port of the demo. The .dmg is a bit broken unfortunately (no background image, unlike in the screenshot on my site) but I'm fixing that soon.
The demo currently only works on Intel Macs with MacOS 10.13 and up (it might work through Rosetta 2 on Apple Silicon. I don't have a device to test it though).
I'm releasing a universal binary for MacOSX 10.9 (Intel) and up and MacOS 11 (Apple Silicon) and up respectively soon.