RPN-25 CE 4+

Highly popular 1975 calculator

CuVee Software

Designed for iPhone

    • USD 2.99

iPhone Screenshots

Description

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

What’s New

Version 5.1

• The instruction "ERROR nn" with nn = 99 will cause the display to blink rapidly three times.

Bug Fix:

• In the sample program "41-Curve Fitting (Kolb)", the equation for curve 3 ("Combined Linear and Hyperbolic") was incorrectly shown as y = a + b/x + c/x instead of y = a + b•x + c/x. Tap "Restore Sample Progs" in the program list to see the change.

App Privacy

The developer, CuVee Software, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More

Supports

  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

RPN-55 SD
Productivity
RPN-34 CE
Productivity
RPN-65 SD
Productivity
RPN-67 SD
Utilities
RPN-32 CE
Productivity
RPN-38 CX
Productivity

You Might Also Like

GO-25 SciRPN
Utilities
GO-29 SciRPN
Utilities
GO-21 SciRPN
Utilities
Halcyon Calc
Utilities
Plus42
Utilities
RLM-10CX
Utilities