PCalc 4.1 for the Mac is available here.
This update adds full support for OS X Yosemite, including a Notification Center widget, and support for Handoff of calculations between iOS devices and the Mac.
It also brings the core code in line with PCalc 3.3.2 on iOS so you get all the improvements from that release too. Version 4.1 can import any custom layouts from iOS and sync changes via iCloud, but full editing on the Mac will come in the update after this one.
The full list of changes is here.
Let me know what you think. Reviews are always appreciated, as they help people make up their minds when buying. If you wrote a review already, updating it for 4.1 would be great too. Thanks!