A big "thank you", to everybody who participated in beta-testing the next version. The testing phase is now closed.
Since there were two testers who have provided the majority of all valuable feedback, I decided to have them share an award in form of AooStore/Amazon/similar gift vouchers of their choice. Congratulations, and thank you!
Supports numbers with up to 38 significant digits.
Real numbers, binary numbers, lists, arrays or vectors, matrices, names, strings and programs.
On iPad, the display expands to fill the screen. You can easily scroll through and select your entries.
RPN 28x Calc is a programmable scientific calculator with a dynamic stack display. It uses reverse-polish notation (RPN) for its operation.
As you add more values to the stack, the display shown on an iPad automatically expands. To see more lines, simply swipe to scroll. You can also re-order the levels or modify any of the values on the stack.
Use the rich command set to write your own programs.
Work with large data sets using arrays and matrices.
You can use the calculator in Slide Over or Split View alongside other apps on an iPad.
You can browse all variables in a separate viewer. To make a variable available to a command, simply select it in the viewer and issue the command. Double-tap a variable to edit it.
Select "Log" to display your command history. To place a value back onto the stack, double-tap it. Swipe upwards to reveal a panel of action buttons, i.e. to delete entries or to share the log.
On iPad, the side panel has a keyboard and three pages of commands. You can swipe across the panel to navigate between the pages.
On iPhone, you can swipe across the main button panel to navigate between the pages.
Use the page buttons to go to specific pages quickly.
Tap an operand in display to select it. Then issue a command on the selected operand.
From the info menu within the app, you can download the user guide with an introduction and a command reference.
You can restore previous stacks with the UNDO command. Using LAST, you can get back the most recently used operands. With COMMAND, you can get back the most recently typed input.
When you rotate the iPad, RPN 28x Calc optionally re-adjusts its layout to fit the available screen area.
No interruptions. RPN 28x Calc does not display ads. There are no rating requests.
Version 3.0 introcudes programming and matrices and supports multitasking and iPhone,
Version 2.1 adds action buttons to the command log. New command: ≠ and aliases: CHS, SQRT, and ==.
Version 2.0 adds a log and variable viewer.