I have sketch tool that I use on my iPad called Trace by Morpholio. Sketches can be imported to Archicad. There is some 3D integration. It is a pretty nice app that is used by many architects. Often I will create a basic layout or elevation in Archicad then sketch over in Trace. I also use Trace to mark up PDF's.
AC25 Mac MacBook Pro 15", 2019, 2.3 GHz i9, 32GB, Radeon Pro 560X 4GB, 500GB SSD, 32" Samsung Display (2560x1440)