# RPN Calculator 48 vs ELCON smartACCESS

The clearest difference is price: ELCON smartACCESS at Free against RPN Calculator 48's $3.99. ELCON smartACCESS also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On update cadence, ads and in-app purchases there is nothing between them.

ELCON smartACCESS is free to download; RPN Calculator 48 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN Calculator 48 ships an update every 14 months, ELCON smartACCESS every 15 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | RPN Calculator 48 | ELCON smartACCESS |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.8 (238 ratings)](https://appshunter.io/ios/app/rpn-calculator-48/id336580727/reviews)** | — |
| Number of ratings | **238** | — |
| Positive reviews | 95.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 14 months** | Every 15 months |
| Monetization | Paid | — |
| Size | 1 MB | 339 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tom Kerrigan](https://appshunter.io/developer/295445504) | [ELCON Sicherheitstechnik GmbH](https://appshunter.io/developer/1782242477) |

## What reviewers say

### RPN Calculator 48

[App page](https://appshunter.io/ios/app/rpn-calculator-48/id336580727)

This app offers a scientific calculator with Reverse Polish Notation (RPN) functionality, providing an alternative to the default calculator. It features a large, easy-to-read display, a 100-entry stack, and extensive undo/redo capabilities. Its design is inspired by classic HP calculators.

**Highlights:** Reverse Polish Notation (RPN), Scientific calculator functions, Swipe gestures for undo/redo, 100 entry stack, 6 memory buttons, State saving on exit

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent RPN implementation
- 👍 Familiar and intuitive interface
- 💡 Useful features for everyday calculations
- 🚀 Reliable and stable performance
- 👍 Large and visible stack display

**What reviewers complain about**

- 🐛 Lack of landscape mode support on iPad
- 💡 Could use more advanced features like matrix operations

**Reported bugs**

- Display issues in landscape mode on iPad

**Requested features**

- Add haptic feedback for key presses
- Implement ability to recall previous calculations from stack
- Improve landscape mode support on iPad


### ELCON smartACCESS

[App page](https://appshunter.io/ios/app/elcon-smartaccess/id6738762856)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RPN Calculator 48 free?

RPN Calculator 48 costs $3.99, with no in-app purchases.

### Is ELCON smartACCESS free?

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

### Do RPN Calculator 48 or ELCON smartACCESS have ads?

Neither RPN Calculator 48 nor ELCON smartACCESS shows ads.

### Which is updated more often, RPN Calculator 48 or ELCON smartACCESS?

RPN Calculator 48 ships an update every 14 months, and ELCON smartACCESS every 15 months. Most recently, RPN Calculator 48 was updated on September 24, 2026 and ELCON smartACCESS on September 22, 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.*