# RPN-34 CE — Legendary classic calculator

> Photo-realistic simulation of the HP-34C scientific calculator with advanced functions. (iPhone/iPad app by CuVee Software.)

- Source: https://appshunter.io/ios/app/rpn-34-ce/id1448593029 (this page in markdown: same URL + `.md`)
- Developer: [CuVee Software](https://appshunter.io/developer/424873503)
- Category: Productivity, Utilities
- Price: $1.99
- Rating: 5.00/5 from 14 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 16 MB
- Languages: American English
- Released: 2019-01-10
- Data updated: 2026-08-18
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/rpn-34-ce/id1448593029/reviews.md

## What is RPN?

RPN-34 CE is the first photo-realistic simulation of Hewlett-Packard's popular mid-range scientific calculator HP-34C for the iPhone. Produced from 1979 through 1983, it was the "Basil" member of the third-generation HP calculators known as the "Spice" series.

It was the first pocket-calculator ever capable of doing integration and root finding.

While the simulator works like the original calculator, a number of carefully designed extensions, along with the tremendously improved speed, make it joy to use even today.

RPN-34 CE comes with the programs of HP's "Applications", "Mathematics", "Surveying", "Student Engineering", and "Statistics" application books built-in! Handbooks may be downloaded from CuVee Software's website.


Features:

• Photo-realistic look-and-feel
• Programmable (999 steps), subroutines, 12 labels, 10 flags
• 100 registers, "continuous", with full store/recall arithmetic
• "Live" register view
• Program listing view with intelligent navigation
• Program library, easily backed-up via iTunes
• Store and retrieve any number of programs
• Sharing: e-mail, AirDrop, Dropbox, copy, paste, print
• 62 programs pre-installed (53 original HP)


Calculator functions:

• Integration, root solving
• Statistics (mean, standard deviation, linear regression, normal distribution)
• Factorial of any number (normal and logarithmic)
• Trigonometric and hyperbolic functions (degrees, radians, grads)
• Polar/rectangular conversions
• Inverse, square root, logarithm, exponential, pi
• Storage arithmetic (both store and recall)
• Statistics (average, standard deviation, y-estimate, linear regression)
• Unit and hours conversions
• 31 additional functions not found on the HP-34C, like time and sound

Details: cuveesoft.ch/rpn34

## Key features

- Photo-realistic look-and-feel
- Programmable with 999 steps
- Integration and root solving
- Built-in application programs
- Live register view
- Program library and backup
- Sharing via email, AirDrop, Dropbox

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/rpn-34-ce/id1448593029/reviews.md

### 5/5 — Good time is back

*2023-09-06*

I bought my HP34C on middle 1981, when I began technical high school, works good for the next 10+ years, went to Engineering College, after then used in my job. R.I.P. But now it is back… 😃

### 5/5 — Awesome app

*2020-11-15*

It is obvious this is a sophisticated, mature app. RPN-34 CE has surpassed my highest expectations. Amazing!

### 5/5 — Faithful Reproduction …

*2019-02-23*

… of the calculator that got me through tech school, a few years of Uni, and then beyond. If you can’t do it with this math powerhouse (now enhanced in all sorts of ways by CuVee), then you just haven’t the patience to learn.

### 5/5 — Terrific !

*2019-01-28*

The HP-34C was the Cadillac of the Spice series. It’s built in functions were even more powerful than the HP-67, but with one glaring drawback. The original had no way to save programs. RPN-34 CE fixes that with an easy way to save & retrieve programs to several different media, even email. What’s more programs can be up to 999 steps long, with no loss of storage registers. Lots of wonderful extras!

### 5/5 — Another win for Cuvée Software

*2019-01-09*

This simulator is just too great!  I have an HP-34C from my undergrad days in the early 80s.  I've used fairly regularly until the last 10 years or so.  The switches have become noisy so I've archived it just so that it stays fully functional going forward.  I couldn't be more thrilled to now have it in my iPhone !!!!  RPN-34C is well done indeed.

Cuvée Software has created fantastic simulators of some of HP's best calculators with TONS of enhancements.  I absolutely love the work.  It's fun to take trips down memory lane but it didn't take long to get addicted to enhanced features and speed of RPN-34CE :)  I use the RPN-67/97 simulators to solve very real problems.  I'm now including the RPN-34C for that purpose too.  I don't normally sing praises like this but I'd be dishonest if I didn't in this case!  Cuvée products are truly a cut above the norm (maybe even >2sigma ;)

## Frequently asked questions about RPN

### What is RPN-34 CE?

RPN-34 CE is a photo-realistic simulation of the classic HP-34C scientific calculator for iPhone. It offers advanced functions like integration and root finding, along with programmable capabilities.

### What makes RPN-34 CE unique?

It provides a highly accurate simulation of the original HP-34C, including its programming features and a photo-realistic interface. It also includes carefully designed extensions and improved speed for a better user experience.

### Does RPN-34 CE have ads?

No, RPN-34 CE is ad-free. It is a paid application, meaning you purchase it once to use all its features without any advertisements.

### What kind of programs are included with RPN-34 CE?

RPN-34 CE comes with programs from HP's "Applications", "Mathematics", "Surveying", "Student Engineering", and "Statistics" application books built-in. It also includes 62 pre-installed programs, with 53 being original HP programs.

### How many steps can RPN-34 CE programs have?

RPN-34 CE allows for programs of up to 999 steps. It also supports subroutines and 12 labels for complex programming.

### What platforms is RPN-34 CE available on?

RPN-34 CE is available for iPhone and iPod touch devices. It requires iOS 11.0 or later.

### How often is RPN-34 CE updated?

The latest version, 3.2, was last updated on December 4, 2025. Updates typically include bug fixes and feature enhancements.

### What is the user sentiment for RPN-34 CE?

Users have given RPN-34 CE a perfect 5.0-star rating based on 13 reviews, indicating a very positive reception and satisfaction with its functionality and accuracy.

## Version history (last 5 releases)

### 3.2 — 2025-12-04

• Improved compatibility with iPhone Air and iOS 26.

Bug Fix:

• Pausing a loop would show the "busy" indicator instead of the current X value.

### 3.1 — 2025-10-15

• Improved compatibility with iPhone Air and iOS 26.

### 3.0 — 2025-07-25

Non-volatile stack: when reloading the app, the stack is now restored along with all registers.

### 2.9 — 2025-05-08

• Faster startup – no delay until the first button press is recognized after switching on.

### 2.8 — 2025-02-20

• The setting "Registers" is now part of a saved program.

• Improved compatibility with a real HP-34 when recalling statistics registers

• Visual adjustments for iPhone 16 Pro and iPhone 16 Pro Max

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## More apps by CuVee Software

- [RPN-45 HD](https://appshunter.io/ios/app/rpn-45-hd/id424873500)
- [RPN-70 HD](https://appshunter.io/ios/app/rpn-70-hd/id436127144)
- [Smart Sudoku](https://appshunter.io/ios/app/smart-sudoku/id457564906)
- [Vintage-45](https://appshunter.io/ios/app/vintage-45/id506402272)
- [RPN-45 SD](https://appshunter.io/ios/app/rpn-45-sd/id509923051)
- [RPN-67 NP](https://appshunter.io/ios/app/rpn-67-np/id603100249)

All apps by CuVee Software: https://appshunter.io/developer/424873503

## Related topics

[cuvee software](https://appshunter.io/ios/topics/cuvee-software)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*