# RPN vs EMC Debug

The clearest difference is price: EMC Debug at Free against RPN's $2.99. EMC Debug also leads on update cadence (weekly vs every 4 months). RPN's advantage is ads (none vs shown) and chart position (#180 vs unranked). On in-app purchases, device support and iOS requirement there is nothing between them.

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

RPN ships an update every 4 months, EMC Debug weekly. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | RPN | EMC Debug |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| 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** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Paid | — |
| Best chart rank | **#180** | — |
| Size | 62 MB | 63 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [CHEHUNG LIN](https://appshunter.io/developer/1875201673) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-65-sd/id1176059659)

**Currently charting:** #180 Top Paid · Productivity (US App Store)

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


### EMC Debug

[App page](https://appshunter.io/ios/app/emc-debug/id6758831611)

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

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is EMC Debug free?

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

### Do RPN or EMC Debug have ads?

EMC Debug shows ads; RPN does not.

### Which is updated more often, RPN or EMC Debug?

RPN ships an update every 4 months, and EMC Debug weekly. Most recently, RPN was updated on September 21, 2026 and EMC Debug on September 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*