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- Versions+1
- Price History
- Description
- FAQ
All Versions of RPN
5.0
July 2, 2024
• New sample program "Holidays multilingual" shows the date of Ash Wednesday, Easter, Ascension, Whitsun, and Corpus Christi for any year in the range 1583 to 4099 in three languages (English, Spanish, German).
• New sample program "41-Curve Fitting (Kolb)" automatically finds the best fitting curve (out of 20) for a given set of data points.
• Toggle LED vs. High-Contrast display: f double-tap display
• Toggle thousand separators on/off: f triple-tap display
• Setting flag 41 causes ∑+ and ∑- to use the HP-41 locations of statistical registers.
• Added warning when attempting to alter a Sample Program.
• The trig mode indicator DEG is switched off after the selected "Pause Length".
• "FC?S nn" (renamed to "FC?S/C nn") acts as "FC?C nn" if flag 41 is set.
Changed instruction:
• "∑SWAP41 nn" (was ∑SWAP41)
Swaps the current RPN-25 statistics data block with the HP-41-compatible block at the location Rnn.
Bug Fixes:
• Calling up the Rydberg constant in the sample program CODATA 2018• would cause a crash.
• Alignment of messages (MSG,MSGP,MSGP) could be incorrect in some cases.
More4.9
April 11, 2024
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).
More4.8.1
February 8, 2024
Bug fix: If the buttons "Delete" and "Import" were grayed out in the program file list, selecting a program would not enable them.
More4.8
January 13, 2024
• Internal optimizations and cleanups.
• Modified Info screen to avoid clipping by the Dynamic Island.
More4.7
December 19, 2023
• 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.
More4.6.5
May 9, 2023
• 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.
More4.6
April 30, 2023
• Added a switch in Settings to set the calculator to vintage mode, simulating a real HP-25.
• If RPN-25 is set to vintage mode, shifted functions not available on a real HP-25 are not presented anymore.
• In RUN mode, holding SST or BST keys depressed now shows the current or previous instruction code, respectively, just like on a real HP-25.
• The DOW (Day of week) function doesn't require the display to be set to FIX 6 or higher anymore in interactive mode.
• If auto-running of a program is disabled (by setting flag 99), it may be re-enabled by saving Settings with Auto-Start set to ON (in addition to clearing flag 99 or turning power off and on.)
• Decimal point and thousands separator symbols are now set according to the iOS locale.
• In addition to sliding, the power switch may also be moved by double-tapping. A single-tap is ignored when the calculator is on.
More4.5
September 29, 2022
• Clock display (f- or g-PRGM/RUN) now shows the date in high-contrast mode.
• New instructions:
- HAPTIC f sets the haptic level of the iPhone to level f (1…3, 0 for no haptics)
- HAPTIC? returns the current haptic level (0…3)
„Sounds & Haptics“ / „System Haptics“ must be on in the iPhone's settings.
Bug Fix
• Issues with DOW function. Now works correctly for all Gregorian dates (Oct 15, 1582 and later.)
More4.4
August 18, 2022
• If high-contrast display is on, the mantissa of a number (g MANT) is now shown without thousands separators.
• Also in high-contrast mode, the DOW (day-of-the-week) function now shows the date as text, in addition to the day number.
• Pressing a User Key now clears any user message, just like pressing a regular key does.
• Added stack indirection (by prefixing stack register name with "i") when specifying values to show in MSG, MSGP, MSGS instructions.
• Numeric values in MSG, MSGP, MSGS instructions may now be forced to the FIX 0 format (by prefixing their name with "I").
• New instructions:
- FLOOR rounds down towards negative infinity.
- CEIL rounds up towards positive infinity.
– "BASE? b" (b = 2..9) tests if the positive integer part of X is a valid number in base b. If not, the next step is skipped.
– CF0to9 clears the flags F0 to F9.
– HIDE 41 and SHOW 41 controls the visibility of the flag 41 indicator.
- Convert between units of power (kW, mechanical horsepower hp, metric horsepower PS)
New Sample Programs:
• CODATA 2018
Allows easy access to 354 physical constants, along with their names. Easily adaptable for your own lookup tables.
• Boolean Functions and Base Conversions
AND / OR / XOR / NOT operations and conversions from any base to any other (base = 2 to 10)
• Mixing
Mix cold and hot liquids to obtain a specific amount of liquid at a specific intermediate temperature.
Bug Fixes
• Copy/paste in PRGM mode didn't work if high-contrast mode was turned on.
• Fixed issues with wrapping/unwrapping number literals followed by a CHS instruction.
• The sequence of digits defining a number with an exponent that is a multiple of 10 did not correctly translate into a literal.
More4.3
July 1, 2022
• Added large-digits, LCD-like high-contrast display option (triple-tap display to turn on and off).
• Nicer looking clock display with colons. To turn on, tap f or g, then tap the PRGM/RUN switch.
• New or changed instructions:
- HC DSP sets high-contrast display if x ≠ 0, standard LED display if x = 0.
- GET SEPS returns the thousands separators setting: 0 = OFF, 1 = ON
- SET SEPS sets the thousands separators setting: 0 = OFF, other = ON
- SPEC DSP displays up to 25 special characters in high-contrast mode
- CLOCK shows or hides the 12- or 24-hr real-time clock
- DATE shows clear-text weekday and date if high-contrast display is on
MorePrice History of RPN
Description of RPN
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
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RPN: FAQ
RPN is not iPad-compatible.
The app was developed by Willy Kunz.
RPN requires iOS 12.0 or later.
Users are raving about RPN, which has an exceptional rating of 4.6 out of 5.
Rpn Relates To The Utilities App Genre.
The current version of the RPN app is 5.0.
RPN updated its app on July 2, 2024.
The release date of the app was February 5, 2023.
This app is rated for ages 4 and up, and contains only family-friendly content.
The following list of languages is supported by the RPN app: English.
Sorry, RPN is not part of Apple Arcade.
Sorry, there are no in-app purchases available in RPN.
No, RPN does not provide support for Apple Vision Pro.
