# RPN vs JotShelf

The clearest difference is price: JotShelf at $1.99 against RPN's $2.99. RPN's advantage is iOS requirement (12.0 vs 18.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

RPN costs $2.99 and JotShelf $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RPN | JotShelf |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/rpn-65-sd/id1176059659/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Paid | — |
| Size | 62 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-65-sd/id1176059659)

Experience a faithful simulation of the groundbreaking HP-65 programmable calculator on your iPhone. This app offers virtual program and data cards, a paper tape printer, and a robust card manager. Explore four distinct operating modes, including an enhanced "Super-65" option.

**Highlights:** Virtual program and data cards, Virtual paper tape printer with AirPrint, Database-driven card manager, Create, delete, and organize unlimited cards, Sharing via email, AirDrop, Dropbox, iTunes, Paste and run existing HP-65 listings, Four distinct operating modes

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

**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 $2.99, 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 4 months, and JotShelf every 4 months. Most recently, RPN was updated on October 26, 2026 and JotShelf 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.*