# HP vs TimecodeRPN

The clearest difference is price: HP at Free against TimecodeRPN's $0.99. TimecodeRPN's advantage is update cadence (every 2 days vs every 11 days). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

HP is free to download; TimecodeRPN costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HP ships an update every 11 days, TimecodeRPN every 2 days. The most recent releases landed on October 8, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | HP | TimecodeRPN |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| 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 | No |
| Update frequency | Every 11 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 2 MB | 19 MB |
| Requires iOS | **17.2** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Enrique Haro](https://appshunter.io/developer/1778874870) | [Denis Leconte](https://appshunter.io/developer/1602768490) |

## What reviewers say

### 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


### TimecodeRPN

[App page](https://appshunter.io/ios/app/timecoderpn/id6755567328)

**In-app purchases:** none


## Frequently asked questions

### Is HP free?

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

### Is TimecodeRPN free?

TimecodeRPN costs $0.99, with no in-app purchases.

### Do HP or TimecodeRPN have ads?

Neither HP nor TimecodeRPN shows ads.

### Which is updated more often, HP or TimecodeRPN?

HP ships an update every 11 days, and TimecodeRPN every 2 days. Most recently, HP was updated on October 8, 2026 and TimecodeRPN on September 13, 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.*