While the "Pro" version is paid, the Blender Market page often hosts free updates for the original add-on or trial versions.
The original source code for Archipack is available on GitHub. This is the safest place to get the free version. archipack blender 2.8 free download
Stairs are notoriously difficult to model manually. Archipack generates them instantly. You can choose: While the "Pro" version is paid, the Blender
Control risers, treads, thickness, and railings. Control risers, treads, thickness, and railings
