# RPNPro vs bcRPN

The clearest difference is review sentiment: bcRPN at 80% against RPNPro's 50%. bcRPN also leads on ratings volume (4 vs 1). RPNPro's advantage is rating (5.0 vs 4.8) and iOS requirement (9.1 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RPNPro holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews complicate that: 50% of RPNPro's written reviews are positive against 80% of bcRPN's, so the app with the better star average is not the one people write more warmly about.

RPNPro ships an update every 37 months, bcRPN every 22 months. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | RPNPro | bcRPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rpnpro/id603155368/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/bcrpn/id1614744829/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 50.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 22 months** |
| Monetization | Free | Free |
| Size | 1 MB | 0 MB |
| Requires iOS | **9.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Felix Meier](https://appshunter.io/developer/603155771) | [Paul Wilkins](https://appshunter.io/developer/1614739840) |

## What reviewers say

### RPNPro

[App page](https://appshunter.io/ios/app/rpnpro/id603155368)

This calculator utilizes Reverse Polish Notation (RPN) for input, mirroring the functionality of classic HP calculators. It features a four-level stack with X, Y, Z, and T registers, displaying the X register in decimal, hexadecimal, and binary.

**Highlights:** Reverse Polish Notation (RPN) input, Four-level stack (X, Y, Z, T registers), Decimal, hexadecimal, and binary display, Modeled after HP calculators, Designed for software engineers

**Features:** macOS Compatibility

**In-app purchases:** none


### bcRPN

[App page](https://appshunter.io/ios/app/bcrpn/id1614744829)

This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.

**Highlights:** Reverse Polish Notation (RPN) input, Complex number calculations, Extended precision math, Unlimited stack depth, Undo functionality (up to 10 operations)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RPNPro free?

RPNPro is free to download, with no in-app purchases.

### Is bcRPN free?

bcRPN is free to download, with no in-app purchases.

### Which has better reviews, RPNPro or bcRPN?

RPNPro is rated higher. RPNPro averages 5.0 out of 5 from 1 ratings, while bcRPN averages 4.8 from 4 ratings.

### Do RPNPro or bcRPN have ads?

Neither RPNPro nor bcRPN shows ads.

### Which is updated more often, RPNPro or bcRPN?

RPNPro ships an update every 37 months, and bcRPN every 22 months. Most recently, RPNPro was updated on September 28, 2026 and bcRPN on October 7, 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.*