# RPN Calculus vs RPN

The clearest difference is price: RPN Calculus at $1.99 against RPN's $4.99. RPN Calculus also leads on iOS requirement (12.0 vs 16.6). RPN's advantage is device support (3 vs 1). On update cadence, ads and in-app purchases there is nothing between them.

RPN Calculus costs $1.99 and RPN $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN Calculus ships an update every 4 months, RPN every 7 months. The most recent releases landed on October 14, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | RPN Calculus | RPN |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/rpn-calculus/id374359458/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Paid | — |
| Size | 11 MB | 1 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Braun](https://appshunter.io/developer/296553965) | [Steven Davies](https://appshunter.io/developer/1705785558) |

## What reviewers say

### RPN Calculus

[App page](https://appshunter.io/ios/app/rpn-calculus/id374359458)

This scientific calculator app for iPad offers a clean RPN interface with basic and advanced functions. It supports high precision calculations and provides an extensive, user-extendable database of scientific constants.

**Highlights:** RPN (Reverse Polish Notation) interface, Basic and advanced mathematical functions, High precision calculations (up to 15 digits), Extensive scientific constant database, User-extendable constant database, Memory space for values

**In-app purchases:** none


### RPN

[App page](https://appshunter.io/ios/app/rpn-calc/id6464329997)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RPN Calculus free?

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

### Is RPN free?

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

### Do RPN Calculus or RPN have ads?

Neither RPN Calculus nor RPN shows ads.

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

RPN Calculus ships an update every 4 months, and RPN every 7 months. Most recently, RPN Calculus was updated on October 14, 2026 and RPN on October 27, 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.*