# RPN vs SmartCalc Easy

The clearest difference is in-app purchases: SmartCalc Easy at none against RPN's 1. RPN's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. RPN sells 1 one-off in-app purchase. SmartCalc Easy asks for nothing beyond the download.

RPN ships an update monthly, SmartCalc Easy every 3 weeks. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | RPN | SmartCalc Easy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 5 MB | 5 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Tomas Stankiewicz Baldassarri](https://appshunter.io/developer/452519243) | [Younghan Kim](https://appshunter.io/developer/1859100256) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn/id452519240)

This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.

**Highlights:** Reverse Polish Notation (RPN) input, Stack-based operation, Intuitive digit and operation buttons, Clear result display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack LCD | $0.49 | one-time |


### SmartCalc Easy

[App page](https://appshunter.io/ios/app/smartcalc-easy/id6757077422)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

RPN is free to download, with in-app purchases available.

### Is SmartCalc Easy free?

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

### Do RPN or SmartCalc Easy have ads?

SmartCalc Easy shows ads; RPN does not.

### Which is updated more often, RPN or SmartCalc Easy?

RPN ships an update monthly, and SmartCalc Easy every 3 weeks. Most recently, RPN was updated on October 19, 2026 and SmartCalc Easy on October 28, 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.*