Version History

4.10.7

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.

4.10.6

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.

4.10.5

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.

4.10.4

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".

4.10.3

Fixed a problem changing the settings for the menu bar widget.

4.10.2

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.

4.10.1

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.

4.10

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.

4.9.3

Fixed a problem entering tax rates with decimal numbers.

4.9.2

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.

4.9.1

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

4.9

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.

4.8

Added support for macOS 11 Big Sur.
Added support for Macs with Apple Silicon processors.
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.

4.7

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.

4.6.5

Updated all scientific constants to the latest CODATA 2018 values, and now include the full list.
Improved accuracy of stored numbers when PCalc isn't running, and for copying and pasting.
Improved the UI for using multiple memories in the widget.
No longer show the "M" indicator when other memories have contents, but "Use Multiple Memories" is off.
Added new line display types that show a running total for the current calculation, the "Last X" value, and all the memories.
Added an option for displaying all function variables in the registers section.
Fixed a problem with still being able to click buttons that weren't enabled.
Titlebar buttons now work with VoiceOver and AppleScript.
Polyhedral dice!

4.6.4

Improved accessibility support for the window buttons.

4.6.3

Added an option for using minimalist or normal window buttons, and made normal the default.
Added an option for currencies to show four decimal places.
Added a new line display type which always shows the x register as a fraction.
Fixed a problem setting the display background color for the "Dark Night" theme.
Fixed a problem with custom colors not applying to the dark widget theme.
Fixed a problem with the "Advanced" section of the preferences being too tall for some screens.
Fixed a problem dragging windows around.
Fixed a problem with windows being opened off screen.

4.6.2

Improved support for macOS 10.14 Mojave.
Fixed a problem pasting into the Today Widget.

4.6.1

Improved support for macOS 10.14 Mojave.
Added support for layouts created on iOS with custom buttons that open URLs.
Fixed a problem with the Today Widget having a light border in dark mode on Mojave.

4.6

Full support for macOS 10.14 Mojave, including dark mode.
You can now choose separate themes for both dark and light mode.
Made "Dark Night" the default dark theme, and now use it on the widget in dark mode.
Improvements to copy and paste, and drag and drop.
Fixed a problem with VoiceOver and the Deg/Rad/Grad button.
Fixed a problem with Engineering display mode sometimes being used instead of Scientific.

4.5.7

Fixed a problem with operator precedence and powers.

4.5.6

Added a new theme, "Dark Night".
Added support for measuring angles with grads in trigonometry functions.
Added an option to display SI prefixes in Engineering display mode.
Renamed "Use Constant Functions" to the more obvious "Repeat Operation on Equals".
Fixed a problem searching for units in the conversion dialog.
Fixed a problem pasting values with a unicode minus sign.

4.5.5

Added an option to show x10 in scientific notation, in the "Advanced" section of the Preferences.
Added options to turn off the labels and info on the display.
The display is now smarter about using the available space.
You can now use hyperbolic trigonometry in user functions and conversions.
You can now change the tint color for the themes "A Touch of Color", "Blue Sun", "Brawn", "Flux", "Metal", "Primary Colors", "Rough Draft", and "Widget".
The About screen now has an ambient electronic soundtrack composed by Squillopian.
Fixed a problem with custom layouts that used the log base n button.
Fixed a problem editing user functions with an inverse power command.

4.5.4

Added Icelandic Króna to the currency conversions.
Fixed a problem loading the currency rates.
Fixed a problem with the "Decimal X Register" line type.
Fixed a problem importing and syncing custom layouts.

4.5.3

More fixes for High Sierra.

4.5.2

Added an option to switch off the beep on error in the "Accessibility" section of the preferences.
Fixed a problem with number of lines shown for the "Splitscreen" layouts.
Fixed a problem with the widget not displaying "Error".
Fixed a problem with the widget corners not drawing correctly on High Sierra.
Fixed a problem with custom keyboard shortcuts in the widget.
Added leaderboards and achievements to the About screen.

4.5.1

Now draw a faint line at the top of the display to separate the draggable titlebar area from the display lines.
Added an option to turn off dragging lines of the display, so the window moves instead.
Added an option to set the maximum denominator for the fraction display mode.
Added the extra theme tints from iOS, including "Hot Pink" and "Deep Purple".
Fixed a problem with number of lines shown for the "Basic" Mac layouts.
Fixed a problem with the binary line display.
Fixed a problem with the main calculator window not minimizing on High Sierra.
Fixed a problem with buttons drawing upside-down when pressed on High Sierra.
Fixed a problem with display background drawing upside-down on High Sierra.
Fixed a problem with the color swatches in the settings being blank on High Sierra.
Added "Level 2" to the About screen. Look for the golden banana!

4.5

Full support for macOS 10.13 High Sierra.
Completely rewrote the display code. Many exciting things to come later which are now possible because of this, but some changes today!
You can now drag values to and from any line of the display and the registers / stack window.
You can now adjust the size of the digits in the display, and make them much bigger or smaller.
You can now use a space for the thousands separator.
Hex, octal, and binary numbers are now grouped using spaces on the display.
Added links for downloading the manual to the Help menu.
Added a arbitrary base "Log N" button to most of the advanced layouts.
Added a variety of new digit styles.
Fixed a display problem with the tape and the "Show implied parentheses" option.
Fixed a problem resetting user layouts.
There might be a small game in the About screen too.

4.4.4

Buttons in the Touch Bar will now make click sounds if you have the "Key Click" option on.
You can now display, copy, and paste the current value as UTF-32, so Emoji characters now work properly.
Fixed a problem display the "M" indicator in the Mac "Basic Large" layout.
Fixed a crash accessing the menus if you had any custom layouts installed.

4.4.3

Added support for the Touch Bar on the new MacBook Pros.
Fixed a problem setting custom decimal and thousands separators.
Fixed a problem displaying fixed scientific notation with zero decimal places.

4.4.2

Added a new "Rounding" option to the Advanced section of the preferences, which controls the display, as well as the behaviour of the "Round" button.

4.4.1

Improved support for macOS 10.12 Sierra.
Added an option to display improper fractions in "Fraction" display mode.
Added a new "Widget" section to the preferences window, with a new option for key clicks in the widget.
Added new key click options, including volume and stereo clicks.
Improved the key click sound playback.
Fixed a problem pasting in fractions of the form "2 3/4".
Fixed a problem with the widget not remembering which layout to use.
Fixed a crash when bringing up the functions, conversions, or constants sheet.

4.4

Added support for macOS 10.12 Sierra, including an updated widget.
Added a new "Fraction" display mode that shows the closest fraction for the current decimal result.
Added a new "Accessibility" section to the preferences window, with new options for large and bold text.
Widget now uses the "Samurai" theme on Sierra, and uses your custom colors from the main app.
LCD digit, background, and theme colors are now remembered separately for each theme.
Now use monospace digits throughout the app for better readability.
Improved the text in the tape and registers sections.
Now show "HEX", "OCT", or "BIN" in the display to better indicate the current base.
Fixed a problem with the shadow detaching from the main window.
Various fixes for VoiceOver.
Fixed a problem syncing settings and calculations with the widget.
Fixed a display problem with parentheses in the tape.
Fixed a problem control-clicking the display when using certain themes.
Core code has been updated to match PCalc 3.6 on iOS.

4.3.1

Brand new icon!
Added an option to use E notation for the main display rather than superscript numbers.
Changed the number entry and delete key behaviour to be more sensible for decimals and exponents.
Fixed a problem with copy and paste on 10.9 and earlier.
Fixed a problem with the minus sign not always displaying properly with the LCD digit style.
Fixed a problem syncing the app and widget.
Fixed a number of problems with VoiceOver.
Core code has been updated to match PCalc 3.5.3 on iOS.

4.3

Added full support for OS X 10.11 El Capitan.
Added an option to float the PCalc window above all other apps.
Added the "Split Screen iPad" layouts from PCalc on iOS 9
Added a delta percentage button to most layouts as the 2nd function of percentage.
You can now paste simple calculations into PCalc.
Changed behaviour of the percentage key in algebraic mode to match the Apple calculator - old behaviour still available via "Display percentage result" option in Advanced section of Preferences.
Now display "Error" rather than just blinking the display on an incorrect operation.
Fixed a problem editing user functions and conversions with conditional skip commands.
Core code has been updated to match PCalc 3.5.x on iOS.

4.2

The Today widget has been greatly improved, and now features an advanced scientific mode and full support for keyboard shortcuts. Click the display to give the widget keyboard focus, and you can then use any of the shortcuts from the main app.
Various fixes and enhancements to the main app.

4.1

Added full support for OS X 10.10 Yosemite.
Added a Notification Center Widget on Yosemite to perform quick calculations. Tap the display to switch to the full app.
Added support for Handoff on Yosemite to continue the current calculation on another device.
You can now import custom layouts created on iOS and any changes will sync to the Mac via iCloud. Mac editing is coming soon!
Added a new calculator theme, "Backlight".
Added an option to switch off operator precedence entirely.
Added an option to only show the RPN stack in the "Stack" section and keep it scrolled to the bottom.
Added an option for bold key text.
Window titlebar is now drawn in the style of the current theme.
Hold down option to select the inverse of a conversion from the recent conversions menu.
Fixed a problem with operator precedence.
Core code has been updated to match PCalc 3.3.x on iOS.

4.0.2

User functions and conversions can now access the RPN stack, use bitwise operators, and get and set values on the clipboard.
Added support for hex, octal, and binary user functions and constants.
Added "Rol n" and "Ror n" buttons for rotating by an arbitrary number of bits.
Added an option to stop the buttons from taking clicks when in the background, so clicking on the calculator window to switch to it won't accidentally trigger commands.
Added an option to display the ticker tape at the top of the display.
Added a "Copy" button to the tape window to copy the whole tape to the clipboard.
Added confirmation dialogs when deleting keyboard shortcuts, user functions, conversions, and constants.
Added better error reporting when updating the currency rates.
Fixed a problem entering user constants when the decimal separator is set to something other than a period.
Fixed a problem pasting in some hex, octal, and binary values.
Fixed a problem with notes not being saved with the tape.
Fixed a problem with deleted constant names not being saved with the tape.
Really fixed a problem with the tax rate not being saved.

4.0.1

Added a "Last" key in algebraic mode which retrieves the result from the last time you pressed equals.
Added a variety of new keyboard shortcuts.
You can now choose to automatically display big or small numbers in engineering mode, rather than scientific.
Now show a double zero key instead of an "Exp" key when in accounting mode.
Improved the readability of the cube root key.
Digit styles are not shown if the underlying font is missing or disabled.
Fixed a rare crash when rotating the iPhone and iPad layouts.
Fixed a problem entering negative fractions.
Fixed a problem with the PCalc window being invisible if the "Arial Rounded MT Bold" font was not available.
Fixed a problem with the "Clear calculator at startup" option not being saved.
Fixed a problem with the tax rate not being saved.

4.0

PCalc 4 has been entirely rewritten based on the latest code from the iOS version, and is now a modern 64-bit Cocoa app.
Added an option to show multiple lines on the display.
Added an option for a “Ticker Tape” which shows a history of recent calculations underneath the main display.
You can now edit user functions and conversions on the Mac, and sync them automatically via iCloud with all your other Macs and iOS devices.
Redesigned tape and register windows that can be torn off from the main calculator window and resized.
Smart searching for conversions, constants, and functions - try “£ to $” in the search field, for example.
Enhanced AppleScript support that lets you call any command, perform conversions, run functions, and apply constants.
Added all the keyboard layouts from the iPhone and iPad versions.
Added two new themes, “Samurai” and “Samurai Night”.
Added lots more digit styles.
Added an accounting display mode.
Added trend arrows to the currency rates.
You can now add notes to the tape.
And lots more!

PCalc is now only available from the Mac App Store.

3.9

PCalc on the Mac now supports the user functions, conversions, and constants created by the iOS version, and will sync them automatically via iCloud. †
You can now create an unlimited number of your own user constants.
Updated built-in scientific constants to the 2010 values from CODATA.
Added constant functions in algebraic mode - press equals to repeat the last calculation, or enter a new value and then press equals.
Added an option to set the upper value where scientific notation display starts.
Added an option to hide the button tool tips.
Now show unit symbols for constants in the menu tool tips.
Now warn before resetting all the keyboard shortcuts to defaults.
Tape will now show thousands separators.
Fixed a problem with some windows being hidden after using an Open or Save dialog.
Fixed a problem entering fractions after using the delete key.

† Syncing is only available in the Mac App Store version, due to Apple's restrictions on iCloud usage. Sorry!

3.8

Added support for Retina displays.
Fixed a problem with the tax rate not saving.
Fixed a crash on startup when updating currency rates.
Fixed a problem dividing negative non-decimal numbers.
Various fixes for Mountain Lion.

3.7.1

Added support for Mountain Lion.
Added a new "Density" section to the unit conversions.
Added a new calculator theme, "Brawn".
You can now use the minus button to change the sign of an exponent as you are entering it.
Fixed a problem with scripts not running.
PCalc now requires 10.6.8 or later.

3.7

Added a "Frac" button to most layouts for quick fraction entry. You can also press the decimal point button a second time.
Added an option for a fixed four register RPN stack.
Added an option to set the lower value where scientific notation display starts.
Added a new "Lighting" section to the unit conversions with lumen, lux, footcandles etc.
Added inch/mm of mercury and water to the pressure conversions.
Significantly improved the speed of keyboard entry.
Fixed a problem with PCalc not hiding if set to be a login item.
Fixed a problem with the divide button disappearing in the basic layouts.
Fixed a problem with the Engineering Mode display.
New app icon, from the folks at PyrusMalus!

3.6.1

The PCalc Dashboard widget is now free - you can download the latest version separately from here.
Software update is now significantly improved, with thanks to Rich Siegel and everyone at Bare Bones Software.
Added new force and temperature unit conversions, with thanks to Georg Schober.
Improved the currency rates updating.
Now always perform an integer divide in Hex, Octal, and Binary modes.
When the RPN stack is full with 128 entries, pushing a new number will drop the oldest one.
Opening the conversions now finishes entry of the current number.
Fixed a problem displaying zero in certain cases.

3.6

Added dozens of new unit conversions, including currencies.
Added an option to stop the "AC" button from clearing the memories.
Added a mod operator as a 2nd function of the divide button.
Added "<< n" and ">> n" buttons for shifting by an arbitrary number of bits.
Added two new calculator themes, "Flux" and "Flynn".
Copy and paste now works again in the Dashboard Widget.
Improved detection of overflow in Hex, Octal, and Binary modes.
Updated with the latest code from PCalc 2.2 for iOS.

3.5.2

Added an option to stop the "AC" button from clearing the tape.
When using multiple memories, the memory keys now highlight to show which memories have values stored in them.
Fixed a problem with multiple memories not updating in the Info drawer.
Updated with the latest code from PCalc 1.9.1 for iPhone / iPod Touch.

3.5.1

Gamma function now works on a wider range of inputs.
Fixed a problem with the Dashboard Widget not saving some preferences.
Updated with the latest code from PCalc 1.8.1 for iPhone / iPod Touch.

3.5

Added a "2nd" button and lots of features from the iPhone and iPod touch version including hyperbolic trig functions, hypotenuse, gamma, delta percentage, memory / stack clear, and last x.
Added an option to increase the number of available memories to ten.
Added an option to make the RPN behaviour match more modern calculators like the HP48.
Added an option to play a key click sound.
Added support for regions that use a quote as the thousands separator.
Can now show thousands separators in the info and stack drawers and the unit conversion sheet.
Updated with the latest code and conversions from PCalc 1.7 for the iPhone and iPod touch.

3.4.1

Fixed a problem with the display in some layouts on OS X 10.4.

3.4

PCalc now uses the calculator themes from the iPhone and iPod touch version.
Added themes to the Dashboard Widget.
Added many more unit conversions, including a new cooking section.
Now highlight buttons to show operators and when you are entering a decimal or an exponent.
Fixed copy and paste in the Dashboard Widget on Leopard.
Fixed a problem with the first thousands separator sometimes not being displayed.
Fixed a problem displaying the correct number of decimal places for some numbers.
Updated with the latest code from PCalc 1.5 for the iPhone and iPod touch.

3.3.1

Updated with the latest code from PCalc 1.1 for the iPhone and iPod touch.
Changed "Exp" button to automatically insert a 1 before the exponent if no numbers entered.
Percentage key now works more like HP calculators in RPN mode.
Cube root now supports negative numbers.
Factorial is now calculated using the gamma function.
Added tape control buttons to the "Large" style.
Fixed a problem with very large and small numbers not causing an overflow.
Fixed a problem which could cause the keyboard shortcuts to stop working.

3.3

Now includes many improvements from PCalc for the iPhone and iPod touch.
Added a new calculator style, "Blue Sun", which is now the default appearance.
Added an option to make the RPN mode behave more like HP calculators in both the application and the Dashboard Widget.
Added fuel efficiency conversions and some more constants.
Added more keyboard shortcuts to the Dashboard Widget.
Added better error handling to the functions and conversions.
Smarter multiple undo / redo support.
Reversed the order of the operator buttons to match other calculators.
Fixed a display problem with Engineering Notation.
Fixed a problem remembering the RPN stack between launches.
Fixed a problem with the e^x key in the application "Widget" style.
Fixed a problem with some functions in RPN mode.

3.2

Added speech support to the application. PCalc can now read your actions and results back to you.
Added many new constants as well as support for plug-ins to provide additional constants in future.
Added two new "Large" calculator styles with big buttons and displays.
Added an option to always display trailing zeros after the decimal point, for use with currency calculations.
Added new unit conversions including a new "Power" category.
Constants are now grouped by subject in hierarchical menus.
You can now map keyboard shortcuts to constants.
Improved support for VoiceOver and Universal Access.
Improved the look of the "Aqua" calculator style.
PCalc is now better at remembering your preferred calculator settings in both the application and the Dashboard Widget.
Fixed a problem where PCalc repeatedly asked if you would like to upgrade the Dashboard Widget if your home folder was on a server.
Fixed a problem editing constants and copying and pasting numbers in the application when the decimal separator was set to characters other than a dot.
The Dashboard Widget also now respects the decimal separator.

3.1.1

Fixed a display problem with Engineering Notation.

3.1

Added AppleScript support to the application.
Added a calculator style to the application that looks like the Dashboard Widget.
Added support for displaying numbers using Engineering Notation.
Added Scientific and Engineering Notation support to the Dashboard Widget.
Added "Subtract VAT" and "Calculate VAT" functions.
You can now edit the VAT rate in the Preferences window.
Scientific and Engineering Notation can now be set on a per-calculator basis.
Functions and conversions can now be written using AppleScript.
Fixed a problem with unknown functions and conversions still being displayed in menus.

3.0.3

Improved support for Intel-based Macs.
Added different calculator styles to the Dashboard Widget.
Fixed a problem with copying and pasting to the calculators.
Other minor fixes and improvements.

3.0.2

Corrected a number of the unit conversions.

3.0.1

Added support for using parentheses while entering expressions.
Added an option to show thousands separators in the Dashboard Widget.
Added comma key to the default keyboard shortcuts.
Improved keyboard handling in the Dashboard Widget.
Now display a warning if you choose a keyboard shortcut which is already in use.
Fixed a problem setting certain keyboard shortcuts.
Fixed a problem displaying negative hexadecimal numbers in the Info drawer.
Fixed a problem saving the full state of the calculators.

3.0

Completely rewritten to take advantage of OS X Tiger.
Includes a companion PCalc Dashboard Widget for quick calculations.
More accurate maths engine.
Brand new unit conversion mechanism including many new supported units.
Editable keyboard shortcuts for all actions, including functions and unit conversions.
New calculator styles including Metal and Basic.
Support for adding third-party calculator styles, functions, and unit conversions.
Enhanced RPN mode.
Multiple undo and redo.
Single icon drag install.
Built-in software update mechanism.
PCalc 3 is a free upgrade for registered users who previously bought PCalc 2, and existing serial numbers will continue to work. A special upgrade price of US $10 is available for those people who got PCalc 2.2.3 included with their Macs.
PCalc 3 requires OS X 10.4.2 or later and is distributed as a Universal Binary with support for both Intel and PowerPC processors.

2.2.3

Special version for Apple.

2.2.2

Numerous fixes for OS X.
Fixed some problems with the help.
Support function keys for undo/cut/copy/paste.
Added some new Euro currency conversion and trigonometric functions.

2.2.1

Fixed a bug that could cause PCalc to freeze during certain calculations when set to display 14 decimal places.

2.2

Added support for Reverse Polish Notation (RPN) calculations.
Added support for octal numbers.
Added option to display thousands separators in the LCD.
Added option to quit PCalc when closing the last calculator window.
Fixed a number of function related bugs.
Fixed a problem with displaying large numbers.
Fixed a problem pasting certain numbers.
Fixed a crash when closing a PCalc Classic style window using the close box.
More OS X and Aqua fixes.

2.1

Significant speed increases over 2.0, especially on older machines.
Added tape window showing calculation history, for registered users.
Added information window showing register contents.
Added cube and cube root buttons.
Added round and percentage buttons.
Added more bit shifting buttons in binary and hex mode.
Option to auto-minimise the calculators in the background.
All binary operations now work in hex mode.
Many new functions and constants, courtesy of Roland B. Wassenberg.
Fixed a number of drawing bugs under Aqua.

2.0

PowerPC native and 68K Classic application for OS 8.0 or later
Carbon application included for OS X and OS 8/9 with CarbonLib 1.0.4 or later
New optional Aqua and Platinium look
Support for showing a variable number of decimal places
LCD indicators for current calculation state