We don't offer technical support for SSAS Compare, and we're not planning to do any further work on it.
You can download it for free, with no sign-up.
SSAS Compare lets you review and deploy just the changes you want to SSAS databases. Deploy changes from one SSAS database to another, deliver updates from test to production, and save time comparing and processing.
You can find the support documentation and technical requirements on our documentation site.