Added support for multiple calculator windows.

Added a few more missing conversion units. Fixed a bug with the trigonometry functions. Fixed the app icon on older OS versions.

Added support for macOS 27. Added a "Data Rate" section to the conversions. Powers are now worked out from the right, so 2 ^ 3 ^ 2 is 512. Operator precedence now follows mathematical convention more closely. Rounding and truncating are now consistent throughout the app. Fixed a problem with the percentage button. Fixed a problem with the "Last X" button. Fixed a crash with damaged settings files. Fixed a crash with speech when any "Enhanced" or "Premium" voices were installed. Fixed a variety of other small bugs and edge cases.

Fixed a problem with the menu bar widget only appearing as a menu.

Fixed a problem with missing buttons in the tape window.

Added an option to show labels on the buttons for 2nd functions, in the Advanced settings. Added an option to use woodworking fractions, in the Advanced settings. Added an option to use the Indian numbering system for thousands separators, in the Advanced settings. Added an option to ignore trailing operators, on by default, in the Advanced settings. Added an option to automatically press Equals before "M+" and "M in" operations, on by default, in the Advanced settings. Added an option to hide any gloss effects on the display, in the Theme settings. Added "Flow Rate", "Jewelry", and "Typography" sections to the conversions. Added "norm", "sci", "eng", "acc", "frac", "nCr", "nPr", and "tau" buttons to the layout editor. Added "tau" to the constants, and as a 2nd function of "pi" in most layouts. Improved the user interface of the layout editor. The "Clear on Open" option will now only trigger if you haven't used PCalc in the last five minutes. You can now use combinations and permutations in user functions and conversions. You can now resize the main window even smaller than before. You can now edit buttons to display any SF Symbol as an image. Now show a preview image when picking an SF Symbol. Fixed a problem with the layout editing toolbar. Fixed a problem undoing button edits. Fixed a problem selecting themes from the View menu. Fixed a problem speaking negative numbers. Fixed a problem displaying overflows.

Improved support for macOS 26. Fixed a problem with stray button clicks with the "Maximize in foreground" option switched on. Fixed a problem with the conversion sheet appearing in the wrong place. Fixed a problem with the buttons in the tape window.

Improved support for macOS 26. Added a dedicated Theme section to the settings. Added an option to change the appearance of the user interface. Improved the time opening the app. Improved the responsiveness of the user interface. Fixed a problem with some of the digit styles. Fixed a problem with the calculator window shrinking. Fixed a problem with the window position being forgotten. Fixed a problem with the theme resetting after quitting.

Added support for macOS 26. Added a new default dark mode theme, "Dathomir". Updated the scientific constants to include the latest CODATA 2022 values. You can now choose custom theme tint, digit, and display colors. Fixed a crash at startup on Macs with broken Ethernet cards. Fixed various bugs.

Fixed a graphical glitch with the buttons in the widget on macOS 14. Fixed a crash on macOS 11 on Apple Silicon.

Added support for macOS 14. Pressing "C" twice in a row will now perform an "AC", regardless of the layout. Fixed a problem with the operator highlight being incorrectly cleared after pressing "C". Fixed a problem creating and editing custom conversion categories.

User functions and conversions can now call other functions and conversions. Within reason! Let's not get too recursive here. You can now reference constants within user functions and conversions. Added an option to blink the display if it is updated with an identical value. Added an explanation about the "Allow in Background" permission on macOS 13 if the menu bar widget won't open. Fixed a problem editing user functions and conversions. Fixed a problem with missing buttons in the layout editor. Fixed a problem communicating with the "About by PCalc" app.

Added support for macOS 13. Added an "EV Efficiency" section to the conversions. Now interpret text starting with "0x", "0o", or "0b" as hex, octal, and binary numbers. Fixed an ambiguity when displaying some currency symbols like Yen and Yuan. Fixed a problem with the "Round to Floor" and "Round to Ceiling" user function commands with negative numbers. Fixed a problem with the "Modulo" function with negative numbers.

Improved the appearance of the app. Added menu commands for copying and pasting numbers with U.S. formatting. Added menu commands for copying and clearing the tape. Added a new digit style, "Matrix". Changed the display of numbers between 0.1 and 1.0 to be more consistent in Engineering mode. You can now set images for the categories of custom functions, conversions, and constants. iCloud syncing of user data is now switched on again by default if you are running macOS 12.4 or later. Fixed a problem with operator button selection being lost. Fixed a problem with Shortcuts always opening the app. Fixed a problem with the conversion actions in Shortcuts when set to "Ask each time".

Fixed a problem changing settings in the menu bar widget.

Moved the About screen to a standalone app called "About by PCalc". If you have the app installed, selecting the "About PCalc..." menu item will work exactly as before.

Due to ongoing iCloud problems, iCloud syncing of user data and layouts has been switched off by default. You can still manually export and import to sync. We will switch this back on when Apple fixes things. PCalc is now more compatible with third-party window management utilities. Window sizes are no longer shared across mutliple devices. Added an "Edit" button to the functions, conversions, and constants sections. About screen now runs at 120Hz on suitable hardware. Fixed a problem with button alignment when editing the Mac layouts. Fixed a problem editing certain keyboard shortcuts. Fixed a crash when pasting into the app.

Added support for macOS 12. Added support for Shortcuts on macOS 12. Added the ability to link calculations to notes via Quick Note on macOS 12. You can now use explicit "floor" and "ceiling" rounding in user functions and conversions. Improved VoiceOver support. Fixed a problem creating custom functions, conversions, and constants after resetting iCloud data. Fixed a crash when editing layouts on another device.

Fixed a problem entering tax rates with decimal numbers.

You can now show multiple lines in the menu bar widget. You can now duplicate button layouts between categories, for example to copy a phone layout to the widget. You can now set the C / AC behaviour of a button in the layout editor. The widget now uses the same display font as the main app. Added a warning when you switch on RPN mode for the first time. Fixed a problem with layouts being scrambled at startup. Fixed a problem with conversions performed in the widget not showing up properly on the tape. Fixed a problem with editing that caused function and constant buttons to reset. Fixed a problem syncing the tax rate between the app and widget. Fixed a problem setting the tax rate in the widget. Fixed a problem with the "Mode" button not working.

Fixed a problem that could stop the main window from appearing when the ticker tape was on.

PCalc for the Mac now has a fully featured button layout editor. Finally! You can now edit all the button layouts, including the layout of the menu bar widget. You can now resize the button layouts. You can now use the widget layouts in the main app. Added a new "Currencies" layout to the widget. Added a disclosure triangle to the widget to collapse it down to just the display. The widget now has bigger buttons in the "Advanced" layout, and shows the display mode and RPN stack depth. The widget now works with any custom keyboard shortcuts you set for the main app. The widget can now download currency rates separately from the main app. The widget is now scriptable via AppleScript. Fixed a problem with bold key text in the widget. Fixed a problem with the widget not resizing properly. Fixed a problem with the tickertape in the widget. Fixed a problem with parentheses count on the splitscreen iPad layouts. Fixed a problem with black text appearing on the buttons in the Touch Bar. Fixed a crash when resetting user layouts.

Improved support for macOS 11 Big Sur, and Macs with Apple Silicon processors. Added an option to change the menu bar icon for the widget. The menu bar widget is now off by default, switch it on and off in the Preferences window. Fixed a problem running PCalc on macOS 10.9.

Added support for macOS 11 Big Sur. The PCalc widget now lives in the menu bar, and is much more powerful: The widget now fully supports keyboard shortcuts. You can use a hot key to open it, perform a calculation, and close it again - all without a single click. You can drag the widget off the menu bar and position it anywhere on screen. You can show the ticker tape in the widget. There's an option to automatically clear the widget when opening it. The widget now uses your chosen digit style from the main app. The widget now supports undo and redo. Added an option to use a global hot key to open the main PCalc application. Added some new digit styles. You can now press any of the keyboard shortcuts for "Clear" twice to perform an AC. Fixed a problem setting the display lines. Fixed a problem pasting calculations using the "×" character.

Added support for macOS 10.15 Catalina. Added an option to dim the display when the main window is in the background. Fixed a problem with the app failing to launch when streaming media to an AirPlay 2 device. Fixed a number of problems with dark mode.