About RPN-25 CE
RPN-25 CE is a photo-realistic simulation of Hewlett-Packard's highly popular scientific calculator HP-25 for the iPhone. Produced from August 1975 through 1978, it was the "Squash" member of the second-generation HP...
RPN-25 CE is a photo-realistic simulation of Hewlett-Packard's highly popular scientific calculator HP-25 for the iPhone. Produced from August 1975 through 1978, it was the "Squash" member of the second-generation HP calculators known as the "Woodstock" series.
It was also the first programmable calculator costing less than $200.
RPN-25 CE simulates the HP-25C version released in July 1976. Its major improvement in that update was "Continuous Memory".
While the simulator works just like the original calculator, a number of carefully designed extensions make it massively more powerful.
Features:
• Photo-realistic look
• Programmable (99 or 999 steps), subroutines, conditional loops, branching
• Insert and delete steps with automatic address correction
• 15 user-defined function keys of up to 6 characters each, redefinable under program control
• Programmable text messages
• Program Auto-Start option upon loading
• 100 symbolic labels
• 100 visible registers, "non-volatile", with unrestricted store/recall arithmetic
• 100 flags, visible at a glance
• Single-step constants
• Program comments
• Program library with more than 150 programs pre-installed
• More than 270 functions and operations not available on the HP-25
• 100 sounds built-in
• Much faster than the original
• "Live" register view supporting user interaction (run/stop, single-stepping)
• "Live" stack view
• Thousands separator (optional)
• High-contrast display (optional)
• Selectable pause length (up to a day)
• Program listing view with program title and description
• Program library view
• Store, name and retrieve any number of programs
• Sharing: Files, iCloud Drive, e-mail, AirDrop, Dropbox, copy, paste, print
• Import and run RPN-32 CE and GO-25 programs
• Run a large number of HP-41 programs with little or no changes
• Clock display (AM/PM or 24h)
• Supports Dark Mode
Calculator functions:
• Statistics, including clearing statistics registers only
• Factorial for arbitrary arguments
• Trigonometric functions (degrees, radians, grads)
• Polar/rectangular conversions
• Inverse, square root, logarithm, exponential, Pi
• Percentage
• Storage arithmetic (store and recall)
• Extended stack operations
• Low-battery warning
• Sound alerts
• ..and many, many more
Details: cuveesoft.ch/rpn25
Apr 11, 2024
Version 4.9
New and changed instructions allow you to handle up to 13 statistics data blocks of 7 registers each in parallel.
• ∑REG nn
Sets the first register of the current statistics block to Rnn (R00 to R93).
• ∑REG?
Returns the register number nn of the current statistics data block.
• ∑REGSTD
Sets the first register of the current statistics data block to the default value (R03).
• ∑SWAP41
Swaps the current statistics data block with the block at the HP-41 standard location (R11 to R16).
• ∑SWAP32 (renamed from SWAP∑)
Swaps the current statistics data block with the block at the HP-32 standard location (R10 to R15).
Previous Versions
Here you can find the changelog of RPN-25 CE since it was posted on our website on 2023-09-04 15:53:08.
The latest version is 4.9 and it was updated on 2024-04-23 08:52:25. See below the changes in each version.
RPN-25 CE version 4.9
Updated At: 2024-04-11
Changes: Apr 11, 2024
Version 4.9
New and changed instructions allow you to handle up to 13 statistics data blocks of 7 registers each in parallel.
• ∑REG nn
Sets the first register of the current statistics block to Rnn (R00 to R93).
• ∑REG?
Returns the register number nn of the current statistics data block.
• ∑REGSTD
Sets the first register of the current statistics data block to the default value (R03).
• ∑SWAP41
Swaps the current statistics data block with the block at the HP-41 standard location (R11 to R16).
• ∑SWAP32 (renamed from SWAP∑)
Swaps the current statistics data block with the block at the HP-32 standard location (R10 to R15).
RPN-25 CE version 4.8.1
Updated At: 2024-02-08
Changes: Feb 8, 2024
Version 4.8.1
Bug fix: If the buttons "Delete" and "Import" were grayed out in the program file list, selecting a program would not enable them.
RPN-25 CE version 4.8
Updated At: 2024-01-13
Changes: Jan 13, 2024
Version 4.8
• Internal optimizations and cleanups.
• Modified Info screen to avoid clipping by the Dynamic Island.
RPN-25 CE version 4.7
Updated At: 2023-12-19
Changes: Dec 19, 2023
Version 4.7
• Call up details of Extra Functions directly from the app (via Safari)
• Improved LCM and GCD functions can handle up to 4 arguments
• Vintage Mode:
– No RCL register arithmetic
- No dotted register names, e.g. "R.5"
– No access to registers R8 and R9
– Program execution speed comparable to real HP-25
– The vintage mode setting is stored along with the program
• Runs on Apple Silicon Macs (see notes on homepage cuveesoft.ch)
• RPN-25 CE requires iOS 12.0 or later
• Bug Fixes:
– Instructions GET SEPS and HAPTICS? now work correctly in interactive mode.
- Executing the CLOCK command when the clock was already running would not clear the AM/PM indicator.
RPN-25 CE version 4.6.5
Updated At: 2023-05-09
Changes: May 9, 2023
Version 4.6.5
• Trigonometric mode indicators:
DEG, RAD, and GRD indicators are never shown in vintage mode.
In normal mode, the default setting DEG appears only on the high-contrast display.
• Obsolete mode changes involving "magic numbers" 19390104 and 19390105 have been removed.
• Fixed issues involving the R/S key.
Disclaimer
Official App Store Link
We do not host RPN-25 CE on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Apple and passed their terms and conditions to be listed there. We recommend caution when installing it.
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