# SwiftRPN vs HP

SwiftRPN and HP are too close to call on the numbers: across 3 compared parameters — price, in-app purchases and iOS requirement among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | SwiftRPN | HP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/hp-35/id6738010641/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 11 days |
| Monetization | — | Free |
| Size | 3 MB | 2 MB |
| Requires iOS | **16.4** | 17.2 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Gelvin](https://appshunter.io/developer/1573354051) | [Enrique Haro](https://appshunter.io/developer/1778874870) |

## What reviewers say

### SwiftRPN

[App page](https://appshunter.io/ios/app/swiftrpn/id6470951024)

**In-app purchases:** none


### HP

[App page](https://appshunter.io/ios/app/hp-35/id6738010641)

Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.

**Highlights:** RPN calculator emulation, HP-35 model, HP-45 model, HP-21 model, Classic scientific calculator interface

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

**In-app purchases:** none


## Frequently asked questions

### Is SwiftRPN free?

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

### Is HP free?

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

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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.*