The release notes for version 0.9.9.2 include instructions in PDF format for downloading and installing Hermann10:
Download the current version of Hermann10 for macOS:
Download also the templates needed to generate Hermann10 reports:
Be sure to check out the video tutorial on the main Rorschach page for step-by-step instructions for using Hermann10.
Note: If your Mac warns that Hermann10 cannot be opened because it is from an “unidentified” developer, simply Control-click on the Hermann10 icon and choose “Open” from the pop-up menu. Once you confirm that you want to open Hermann10, this warning will no longer appear.
At present, Hermann10 is unable to create reports when using the latest version of macOS (10.15 Catalina). This will be addressed in the next program update.