# RPN vs Calc

The clearest difference is price: Calc at Free against RPN's $2.99. Calc also leads on update cadence (every 9 days vs every 4 months). RPN's advantage is ratings volume (8 vs 2) and iOS requirement (12.0 vs 18.0). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Calc is free to download; RPN costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for RPN against 5.0 for Calc. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

RPN ships an update every 4 months, Calc every 9 days. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | RPN | Calc |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [5.0 (8 ratings)](https://appshunter.io/ios/app/rpn-65-sd/id1176059659/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/calc-u-59/id6761413142/reviews) |
| Number of ratings | **8** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Paid | **Free** |
| Size | 62 MB | 9 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Martin Erzberger](https://appshunter.io/developer/1889469770) |

## 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


### Calc

[App page](https://appshunter.io/ios/app/calc-u-59/id6761413142)

This app emulates the classic TI-59, TI-58, and TI-58C calculators with cycle-accurate precision. It includes features like a virtual magnetic card reader, a PC-100C printer, and a CPU-level debugger for in-depth analysis. Explore old programs or learn how these vintage machines operated.

**Highlights:** Cycle-accurate TI-59, TI-58, TI-58C emulation, Virtual magnetic card reader, PC-100C printer emulation, CPU-level debugger, Solid State Software module support, State file loading (.ti59, .ti58c)

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

RPN costs $2.99, with no in-app purchases.

### Is Calc free?

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

### Which has better reviews, RPN or Calc?

RPN and Calc are both rated 5.0 out of 5 on the App Store, from 8 and 2 ratings respectively.

### Do RPN or Calc have ads?

Neither RPN nor Calc shows ads.

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

RPN ships an update every 4 months, and Calc every 9 days. Most recently, RPN was updated on November 2, 2026 and Calc on November 9, 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.*