John, As a UBET shareholder, I can understand why they haven't made the investment to make their product compatible to MacIntosh. This company has in the last year or so just started to reach financial stability after several years of struggling to keep its head above the fiscal waters. It wasn't that long ago when its shares were under 50 cents (now ~4.50).
Last I looked Mac users were 5 % or less of the personal computer market. And I would guess that there are a lot less MAC users percentage-wise compared to Windows users that are interested in betting horses. To me, it makes perfect sense for UBET to forego any investment in making their product MAC compatible at this time.
Perhaps, you should join the crowd and buy a Windows PC (basic models are under $500)so you to can utilize UBET's great product.
Good luck. Asfufh