# Ariel Quick Size vs SKF Values

The clearest difference is update cadence: SKF Values at every 3 months against Ariel Quick Size's every 7 months. Ariel Quick Size's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and device support 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 ships an update every 7 months, SKF Values every 3 months. The most recent releases landed on July 1, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Ariel Quick Size | SKF Values |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ariel-quick-size/id571901596/reviews)** | — |
| Number of ratings | **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 | — |
| Size | 31 MB | 57 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](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 Values

[App page](https://appshunter.io/ios/app/skf-values/id1149907235)

**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 Values free?

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

### Do Ariel Quick Size or SKF Values have ads?

Neither Ariel Quick Size nor SKF Values shows ads.

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

Ariel Quick Size ships an update every 7 months, and SKF Values every 3 months. Most recently, Ariel Quick Size was updated on July 1, 2026 and SKF Values on September 17, 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.*