# RPN vs JotShelf

The clearest difference is chart position: RPN at #142 against JotShelf's unranked. RPN also leads on iOS requirement (12.0 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

RPN ships an update every 3 months, JotShelf every 4 months. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RPN | JotShelf |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[5.0 (14 ratings)](https://appshunter.io/ios/app/rpn-34-ce/id1448593029/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | — |
| Best chart rank | **#142** | — |
| Size | 16 MB | 7 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Marko Zamurovic](https://appshunter.io/developer/1876493192) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-34-ce/id1448593029)

**Currently charting:** #142 Top Paid · Productivity (US App Store)

This app simulates a legendary scientific calculator, offering photo-realistic visuals and advanced functions like integration and root finding. It includes built-in programs and extensions for enhanced usability, making it a powerful tool for complex calculations.

**Highlights:** Photo-realistic look-and-feel, Programmable with 999 steps, Integration and root solving, Built-in application programs, Live register view, Program library and backup, Sharing via email, AirDrop, Dropbox

**Features:** macOS Compatibility

**In-app purchases:** none


### JotShelf

[App page](https://appshunter.io/ios/app/jotshelf/id6760388919)

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is JotShelf free?

JotShelf costs $1.99, with no in-app purchases.

### Do RPN or JotShelf have ads?

Neither RPN nor JotShelf shows ads.

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

RPN ships an update every 3 months, and JotShelf every 4 months. Most recently, RPN was updated on October 29, 2026 and JotShelf on October 31, 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.*