# RPN vs Calculee

The clearest difference is price: RPN at Free against Calculee's $2.99. Calculee's advantage is device support (3 vs 1) and iOS requirement (14.3 vs 16.6). On update cadence, ads and in-app purchases there is nothing between them.

RPN is free to download; Calculee costs $2.99 up front. RPN sells 1 one-off in-app purchase and Calculee sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

RPN ships an update monthly, Calculee every 5 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | RPN | Calculee |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | — |
| Size | 5 MB | 1 MB |
| Requires iOS | 16.6 | **14.3** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tomas Stankiewicz Baldassarri](https://appshunter.io/developer/452519243) | [Mikolaj Adamowicz](https://appshunter.io/developer/1448003183) |

## 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 |


### Calculee

[App page](https://appshunter.io/ios/app/calculee/id1633369389)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Colors | $0.99 | one-time |


## Frequently asked questions

### Is RPN free?

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

### Is Calculee free?

Calculee costs $2.99, and also offers in-app purchases.

### Do RPN or Calculee have ads?

Neither RPN nor Calculee shows ads.

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

RPN ships an update monthly, and Calculee every 5 weeks. Most recently, RPN was updated on November 1, 2026 and Calculee on November 7, 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.*