Full user review
"Worked great for contacts, not for calendar"
It identified and moved all my duplicate contacts to its backup folder successfully. I hardly had any that were different versions, so it's simplicity was not a problem. For any that had updates I could go to the separate file and make changes.
It hardly identified any duplicate calendar entries. I don't notice anything different between them or how it identifies them (it doesn't specify like it does for others). I'll have to use another tool to clean the calendar.