# RPN vs bcRPN

The clearest difference is review sentiment: bcRPN at 80% against RPN's 0%. bcRPN also leads on in-app purchases (none vs 1) and device support (3 vs 1). RPN's advantage is update cadence (monthly vs every 22 months). On price, ads, monetization model and iOS requirement there is nothing between them.

Both are free to download. RPN sells 1 one-off in-app purchase. bcRPN asks for nothing beyond the download.

RPN ships an update monthly, bcRPN every 22 months. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | RPN | bcRPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/bcrpn/id1614744829/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 22 months |
| Monetization | Free | Free |
| Size | 5 MB | 0 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tomas Stankiewicz Baldassarri](https://appshunter.io/developer/452519243) | [Paul Wilkins](https://appshunter.io/developer/1614739840) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn/id452519240)

This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.

**Highlights:** Reverse Polish Notation (RPN) input, Stack-based operation, Intuitive digit and operation buttons, Clear result display

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack LCD | $0.49 | one-time |


### 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 RPN free?

RPN is free to download, with in-app purchases available.

### Is bcRPN free?

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

### Do RPN or bcRPN have ads?

Neither RPN nor bcRPN shows ads.

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

RPN ships an update monthly, and bcRPN every 22 months. Most recently, RPN was updated on October 19, 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.*