# RPN vs NPosApp

The clearest difference is update cadence: RPN at every 5 months against NPosApp's every 10 months. NPosApp's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RPN ships an update every 5 months, NPosApp every 10 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RPN | NPosApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/rpn-67-np/id603100249/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 10 months |
| Monetization | Free | — |
| Size | 38 MB | 18 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Milton Navarro](https://appshunter.io/developer/1772476289) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-67-np/id603100249)

This app simulates a legendary vintage scientific calculator, offering a "live" display of its internal states and a virtual paper tape printer. It allows loading and running original sample programs, with advanced features that can be switched off for an authentic experience.

**Highlights:** Live display of stack and registers, Virtual paper tape printer, Email or print paper tape, Cut/copy/paste display value, 30 selectable background images, Non-volatile memory

**Features:** macOS Compatibility

**In-app purchases:** none


### NPosApp

[App page](https://appshunter.io/ios/app/nposapp/id6740348846)

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

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is NPosApp free?

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

### Do RPN or NPosApp have ads?

Neither RPN nor NPosApp shows ads.

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

RPN ships an update every 5 months, and NPosApp every 10 months. Most recently, RPN was updated on November 1, 2026 and NPosApp on October 30, 2026.

---

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