Not worth the the update price

I do perfer Busycal over apples calendar but I feel having to pay the full $49.00 to use it with Mavericks was a bit to much.
Also i was not able to use it with one of my exchange accounts which was a real let down. This as forced me to check apples calendar for meetings and then copy / paste it into Busycal.
I think the Busy people have to really find a fix for all exchange accounts before they say it works. If you have a exchange account, you should down load there demo first to see if it works.
It will save you $49.00 thats not refundable.

Mac the Lover about BusyCal 2, v2.5.4