KiCad is known to work on Mac OS X 10.12 through macOS 10.14. See System Requirements for more details.
If you run macOS 10.14, use the download with 10_14 in its name. If you run 10.12 or 10.13, use the download without 10_14 in its name.
kicad-unified is the default package that most people should install. kicad-unified contains everything: the KiCad suite, documentation, schematic symbols, footprints, translations, templates, demos, and 3D models.

This is a short and fast introductory video for those interested in getting started using KiCAD. I wanted to demonstrate a basic work-flow through schematic ...