# HPU vs Bench Math

The clearest difference is in-app purchases: HPU at none against Bench Math's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Bench Math sells 1 one-off in-app purchase. HPU asks for nothing beyond the download.

## The numbers

| Metric | HPU | Bench Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/hpu-9000/id6793785945/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | Free | — |
| Size | 2 MB | 1 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [LOBOZ LLC](https://appshunter.io/developer/6793785947) | [Guillaume RATOUCHNIAK](https://appshunter.io/developer/6788773012) |

## What reviewers say

### HPU

[App page](https://appshunter.io/ios/app/hpu-9000/id6793785945)

This app provides fluid power engineers with essential formulas and calculators in a retro CRT terminal interface. It offers tools for cylinders, pumps, motors, vehicle drive sizing, fluids, and thermal calculations, with unit conversion and formula references. It works offline and requires no account.

**Highlights:** 21 live calculators for fluid power engineering, US and metric unit switching, Cylinder, pump, and motor calculations, Vehicle drive sizing worksheet, Fluid and thermal calculations, Unit converter and formula reference, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Bench Math

[App page](https://appshunter.io/ios/app/bench-math-cnc-calculator/id6814120682)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bench Math Pro | $5.99 | one-time |


## Frequently asked questions

### Is HPU free?

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

### Is Bench Math free?

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

### Do HPU or Bench Math have ads?

Neither HPU nor Bench Math shows ads.

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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.*