# Calculator RPN vs bcRPN

The clearest difference is price: bcRPN at Free against Calculator RPN's $4.99. bcRPN also leads on review sentiment (80% vs 60%). Calculator RPN's advantage is update cadence (every 3 weeks vs every 22 months) and ratings volume (48 vs 8). On rating, ads, in-app purchases and monetization model there is nothing between them.

bcRPN is free to download; Calculator RPN costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for Calculator RPN against 4.8 for bcRPN. That said, the two scores are not equally well evidenced: Calculator RPN has 48 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 60% of Calculator RPN's written reviews are positive against 80% of bcRPN's.

Calculator RPN ships an update every 3 weeks, bcRPN every 22 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calculator RPN | bcRPN |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.7 (48 ratings)](https://appshunter.io/ios/app/calculator-rpn/id568690457/reviews) | **[4.8 (8 ratings)](https://appshunter.io/ios/app/bcrpn/id1614744829/reviews)** |
| Number of ratings | **48** | 8 |
| Positive reviews | 60.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 22 months |
| Monetization | Free | Free |
| Size | 16 MB | 0 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Pisano](https://appshunter.io/developer/1232617402) | [Paul Wilkins](https://appshunter.io/developer/1614739840) |

## What reviewers say

### Calculator RPN

[App page](https://appshunter.io/ios/app/calculator-rpn/id568690457)

This scientific calculator offers Reverse Polish Notation (RPN) for faster calculations. It includes 54 mathematical functions, coordinate conversions, and unit conversions, all within a simple interface.

**Highlights:** RPN calculation mode, 54 mathematical functions, Trigonometry (simple and hyperbolic), Coordinate and unit conversions, Degrees and radians support, Simple interface

**Features:** Apple Watch app

**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 Calculator RPN free?

Calculator RPN costs $4.99, with no in-app purchases.

### Is bcRPN free?

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

### Which has better reviews, Calculator RPN or bcRPN?

bcRPN is rated higher. Calculator RPN averages 4.7 out of 5 from 48 ratings, while bcRPN averages 4.8 from 8 ratings.

### Do Calculator RPN or bcRPN have ads?

Neither Calculator RPN nor bcRPN shows ads.

### Which is updated more often, Calculator RPN or bcRPN?

Calculator RPN ships an update every 3 weeks, and bcRPN every 22 months. Most recently, Calculator RPN was updated on November 1, 2026 and bcRPN on November 3, 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.*