If this were the only genealogical software available for the Mac I would bite bullet and go with. However, it isn't. The GUI is weird and reminds me of DOS not OS X. It will not let you customize dates and it does not check for dating error, i.e., I entered my b. 1945 and my spouse's as 0500 BC. It accepted it without a question. I think you have a good product so I will give you 3 stars. But no thank you I will stick with Reunion 8.x.