We do not have a download file for the latest version (21.1.1.264), but you can try downloading it from the developer's site
Download version 11.1.3 from Software Informer
Scanned by 3 antivirus programs on Oct 7, 2026.
The file is clean, see the report.
Version: 11.1.3 (x86/x64)
Date update: Mar 30, 2018
File name: psim_demo.zip
Size: 115 MB