# Hardness Unit Converter vs Force Converter

The clearest difference is rating: Force Converter at 5.0 against Hardness Unit Converter's 4.0. Force Converter also leads on iOS requirement (13.4 vs 15.6). Hardness Unit Converter's advantage is update cadence (every 5 months vs every 38 months) and ratings volume (7 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Hardness Unit Converter costs $1.99 and Force Converter $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Force Converter holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Hardness Unit Converter has 7 ratings behind it against 1, so its average is the more settled of the two.

Hardness Unit Converter ships an update every 5 months, Force Converter every 38 months. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Hardness Unit Converter | Force Converter |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | [4.0 (7 ratings)](https://appshunter.io/ios/app/hardness-unit-converter/id1409248484/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/force-converter/id1540754517/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 38 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 0 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [Anna Filobok](https://appshunter.io/developer/1613515832) |

## What reviewers say

### Hardness Unit Converter

[App page](https://appshunter.io/ios/app/hardness-unit-converter/id1409248484)

Easily convert hardness values between 12 different units, including Vickers, Brinell, Rockwell, and Shore. Input your value and select the desired unit for instant conversion, referencing ASTM E 140 standards and polynomial approximations for accuracy.

**Highlights:** Converts 12 hardness units, Vickers, Brinell, Rockwell, Shore support, Tensile strength conversion, ASTM E 140 reference, Polynomial approximation for data, Simple input and unit selection

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

**In-app purchases:** none


### Force Converter

[App page](https://appshunter.io/ios/app/force-converter/id1540754517)

Easily convert force measurements between various units including Newton, kilonewton, ton-force, kilogram-force, and pound-force. Ideal for physicists, builders, and engineers needing quick and accurate conversions.

**Highlights:** Convert Newton (N), Convert kilonewton (kN), Convert ton-force (tf), Convert kilogram-force (kgf), Convert pound-force (lbf), Fast and accurate conversions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hardness Unit Converter free?

Hardness Unit Converter costs $1.99, with no in-app purchases.

### Is Force Converter free?

Force Converter costs $1.99, with no in-app purchases.

### Which has better reviews, Hardness Unit Converter or Force Converter?

Force Converter is rated higher. Hardness Unit Converter averages 4.0 out of 5 from 7 ratings, while Force Converter averages 5.0 from 1 ratings.

### Do Hardness Unit Converter or Force Converter have ads?

Neither Hardness Unit Converter nor Force Converter shows ads.

### Which is updated more often, Hardness Unit Converter or Force Converter?

Hardness Unit Converter ships an update every 5 months, and Force Converter every 38 months. Most recently, Hardness Unit Converter was updated on October 26, 2026 and Force Converter on October 8, 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.*