# Hardness Unit Converter vs s.connect

The clearest difference is price: s.connect at Free against Hardness Unit Converter's $1.99. s.connect also leads on update cadence (every 6 weeks vs every 5 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

s.connect is free to download; Hardness Unit Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hardness Unit Converter ships an update every 5 months, s.connect every 6 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Hardness Unit Converter | s.connect |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/hardness-unit-converter/id1409248484/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 105 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [offizium next GmbH](https://appshunter.io/developer/1567883380) |

## 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


### s.connect

[App page](https://appshunter.io/ios/app/sconnect/id1670294999)

**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 s.connect free?

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

### Do Hardness Unit Converter or s.connect have ads?

Neither Hardness Unit Converter nor s.connect shows ads.

### Which is updated more often, Hardness Unit Converter or s.connect?

Hardness Unit Converter ships an update every 5 months, and s.connect every 6 weeks. Most recently, Hardness Unit Converter was updated on November 2, 2026 and s.connect on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*