TLA Systems has released PCalc 4, rewritten from the ground up to resemble its iOS sibling. The latest version of the powerful Mac calculator includes a number of new features, such as the capability to show multiple lines on the display; a “ticker tape” option to show a history of recent calculations; editable user functions and conversions that sync to iOS and other Macs via iCloud; smart searching for conversions, constants, and functions; enhanced AppleScript support; and more. PCalc 4 requires OS X 10.8 Mountain Lion and is a free update for both Mac App Store users and those who purchased PCalc 3 from Kagi after 1 April 2013. It’s now being sold exclusively through the Mac App Store. ($9.99 new on the Mac App Store, free update)
Two Shortcuts for App Exposé
If you want to see all the windows for a particular app via App Exposé, there are two hidden shortcuts. For either, start by pressing Command-Tab to bring up the app switcher. Then, while still holding down the Command key, press either the 1 key or the up arrow. That puts you into App Expose mode, with all of an app's windows showing, and recent documents in a row across the bottom of the screen. Let up on the Command key, and then you can press Tab to cycle through all the running apps.