# RPN Calculus vs my59

The clearest difference is price: my59 at Free against RPN Calculus's $1.99. my59 also leads on update cadence (every 2 weeks vs every 4 months) and device support (3 vs 1). RPN Calculus's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 26.0). On ads there is nothing between them.

my59 is free to download; RPN Calculus costs $1.99 up front. my59 sells 3 in-app purchases, starting at $0.99 per month. RPN Calculus asks for nothing beyond the download.

RPN Calculus ships an update every 4 months, my59 every 2 weeks. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RPN Calculus | my59 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 11 MB | 11 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Braun](https://appshunter.io/developer/296553965) | [Miroslav Perovic](https://appshunter.io/developer/400748424) |

## 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


### my59

[App page](https://appshunter.io/ios/app/my59/id6759532452)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $9.99 | per year |
| Unlock Full App | $19.99 | one-time |


## Frequently asked questions

### Is RPN Calculus free?

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

### Is my59 free?

my59 is free to download, with in-app purchases available.

### Do RPN Calculus or my59 have ads?

Neither RPN Calculus nor my59 shows ads.

### Which is updated more often, RPN Calculus or my59?

RPN Calculus ships an update every 4 months, and my59 every 2 weeks. Most recently, RPN Calculus was updated on October 14, 2026 and my59 on October 24, 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.*