# WP 34s vs RPN

The clearest difference is price: WP 34s at Free against RPN's $1.99. WP 34s also leads on ratings volume (28 vs 8). RPN's advantage is rating (5.0 vs 4.7). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

WP 34s is free to download; RPN costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 28 and 8 respectively. Written reviews point the same way: 93% of WP 34s's written reviews are positive against 100% of RPN's.

WP 34s ships an update every 4 months, RPN every 3 months. The most recent releases landed on September 20, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | WP 34s | RPN |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.7 (28 ratings)](https://appshunter.io/ios/app/wp-34s/id620255094/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/rpn-55-sd/id1469907917/reviews)** |
| Number of ratings | **28** | 8 |
| Positive reviews | 92.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Size | 11 MB | 17 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pascal Meheut](https://appshunter.io/developer/620255097) | [CuVee Software](https://appshunter.io/developer/424873503) |

## What reviewers say

### WP 34s

[App page](https://appshunter.io/ios/app/wp-34s/id620255094)

This app is a powerful RPN scientific calculator with extensive functions for mathematics, statistics, programming, and engineering. It includes programmer functions, fraction mode, probability distributions, and a stopwatch, offering a comprehensive tool for complex calculations.

**Highlights:** RPN scientific calculator implementation, Programmer functions (binary, octal, hexadecimal), Fraction mode and probability distributions, Stopwatch with real-time clock, Mathematical, statistical, and financial functions, Unit conversions and physical constants, Extended character sets for multiple languages

**Features:** macOS Compatibility

**In-app purchases:** none


### RPN

[App page](https://appshunter.io/ios/app/rpn-55-sd/id1469907917)

This app is a photo-realistic simulation of a classic Hewlett-Packard programmable scientific calculator from the 1970s. It includes a 100-hour digital timer, clock functions, and original HP programs.

**Highlights:** Photo-realistic look-and-feel, Programmable with conditional branching, 100-hr timer and 12/24-hr clock, Original HP programs built-in, Extended features for enhanced usability, Sharing via email, AirDrop, and more

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WP 34s free?

WP 34s is free to download, with no in-app purchases.

### Is RPN free?

RPN costs $1.99, with no in-app purchases.

### Which has better reviews, WP 34s or RPN?

RPN is rated higher. WP 34s averages 4.7 out of 5 from 28 ratings, while RPN averages 5.0 from 8 ratings.

### Do WP 34s or RPN have ads?

Neither WP 34s nor RPN shows ads.

### Which is updated more often, WP 34s or RPN?

WP 34s ships an update every 4 months, and RPN every 3 months. Most recently, WP 34s was updated on September 20, 2026 and RPN on September 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*