Stitch Painter 3.5 for Mac.
Works with Catalina, Big Sur, and Monterey
Stitch Painter 3.5 Compatibility – Mac OSx 10.6 to 12
This video shows features of Stitch Painter 3 all of which are in version 3.5 (which is an update designed for Catalina and above).
Stitch Painter is a grid-design program that allows you to design for a variety of textile arts that utilize grids.
It's feature list is extensive, and includes a variety of drawing tools, motif/brush ability, history panel, Color, Symbols and Texture panels (you can build you own as well), Repeat Mode, etc.
The program includes training videos. USB key (security), DVD (or digital download by request).