# PuchCalc vs RPN

The clearest difference is price: PuchCalc at Free against RPN's $4.99. PuchCalc also leads on update cadence (monthly vs every 7 months) and iOS requirement (14.1 vs 16.6). RPN's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

PuchCalc is free to download; RPN costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PuchCalc ships an update monthly, RPN every 7 months. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | PuchCalc | RPN |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 7 months |
| Size | 5 MB | 1 MB |
| Requires iOS | **14.1** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Jutaro Kimura](https://appshunter.io/developer/1380042044) | [Steven Davies](https://appshunter.io/developer/1705785558) |

## What reviewers say

### PuchCalc

[App page](https://appshunter.io/ios/app/puchcalc/id1561308080)

**Features:** Vision Pro support

**In-app purchases:** none


### RPN

[App page](https://appshunter.io/ios/app/rpn-calc/id6464329997)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PuchCalc free?

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

### Is RPN free?

RPN costs $4.99, with no in-app purchases.

### Do PuchCalc or RPN have ads?

PuchCalc shows ads; RPN does not.

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

PuchCalc ships an update monthly, and RPN every 7 months. Most recently, PuchCalc was updated on October 25, 2026 and RPN on October 27, 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.*