TLA Systems has announced PCalc 4.1 (www.pcalc.com), an update to their scientific calculator for Mac OS X. The new version has support for Yosemite, including a Notification Center widget for quick calculations. Version 4.1 also offers:

° Handoff support, between PCalc running on iOS 8 and Yosemite;

° Support for custom button layouts created with the iOS version. Full editing on the Mac will come in the next release.

° Visual improvements, to match the new look of Yosemite, and unify with the iOS release.

° A new dark calculator theme, “Backlight”.

° All the core calculation code improvements from PCalc 3.3.2 on iOS, including better operator precedence support.

PCalc 4.1 can be purchased for US$9.99 at the Mac App Store. It requires Mac OS X 10.8 or later.