Part of their magic is the integration with the operating system in the form of gestures. Their UI for discovering those used to be stellar; every gesture had a little video preview. Right now I'd describe it as just okay. Check the 'trackpad gestures' section in system settings, or this: https://support.apple.com/en-us/102482
The gestures are there in KDE already https://github.com/NayamAmarshe/ToucheggKDE