For a "better" and more secure download, users should always use official Autodesk channels to avoid malware and license issues. System requirements for AutoCAD for Mac 2018 - Autodesk
: macOS Catalina v10.15 (with Update 2018.3), Mojave v10.14, High Sierra v10.13, Sierra v10.12, or OS X El Capitan v10.11. autocad 2018 mac full download better
: 3 GB free disk space for download and installation. For a "better" and more secure download, users