# Ariel Quick Size vs SKF Soft foot

The clearest difference is rating: Ariel Quick Size at 5.0 against SKF Soft foot's 1.0. Ariel Quick Size also leads on iOS requirement (9.0 vs 15.0). SKF Soft foot's advantage is update cadence (every 3 months vs every 7 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Ariel Quick Size holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Ariel Quick Size ships an update every 7 months, SKF Soft foot every 3 months. The most recent releases landed on July 1, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | Ariel Quick Size | SKF Soft foot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ariel-quick-size/id571901596/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/skf-soft-foot/id990158724/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 31 MB | 70 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ariel Corporation](https://appshunter.io/developer/571901606) | [SKF Sverige AB](https://appshunter.io/developer/472922971) |

## What reviewers say

### Ariel Quick Size

[App page](https://appshunter.io/ios/app/ariel-quick-size/id571901596)

This utility app helps users estimate compressor configurations based on input pressures and flow requirements. It calculates needed horsepower or flow, suggests frame and cylinder configurations, and estimates stages, bore sizes, and discharge temperatures. Results can be emailed for further review.

**Highlights:** Horsepower or gas flow estimate, Compressor frame and cylinder configuration, Estimate required stages and bore sizes, Input gas specific gravity, English or Metric units, Email results

**Features:** macOS Compatibility

**In-app purchases:** none


### SKF Soft foot

[App page](https://appshunter.io/ios/app/skf-soft-foot/id990158724)

This utility app, when paired with specific hardware, helps identify and correct soft foot issues in machinery. It offers a demonstration mode for experiencing the process before hardware purchase, along with automated reports and instructional videos.

**Highlights:** Soft foot identification and correction, Wireless Bluetooth communication, Demonstration mode for trial, Automatic measurement reports, Explanatory videos and 3D animations, Machine library with QR code scanner

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ariel Quick Size free?

Ariel Quick Size is free to download, with no in-app purchases.

### Is SKF Soft foot free?

SKF Soft foot is free to download, with no in-app purchases.

### Which has better reviews, Ariel Quick Size or SKF Soft foot?

Ariel Quick Size is rated higher. Ariel Quick Size averages 5.0 out of 5 from 1 ratings, while SKF Soft foot averages 1.0 from 1 ratings.

### Do Ariel Quick Size or SKF Soft foot have ads?

Neither Ariel Quick Size nor SKF Soft foot shows ads.

### Which is updated more often, Ariel Quick Size or SKF Soft foot?

Ariel Quick Size ships an update every 7 months, and SKF Soft foot every 3 months. Most recently, Ariel Quick Size was updated on July 1, 2026 and SKF Soft foot on July 7, 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.*