# Ariel Quick Size vs Orifice Flow Rate Calculator

The clearest difference is ratings volume: Orifice Flow Rate Calculator at 114 against Ariel Quick Size's 2. Ariel Quick Size's advantage is iOS requirement (9.0 vs 15.6). On price, rating, review sentiment and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Ariel Quick Size against 4.9 for Orifice Flow Rate Calculator. That said, the two scores are not equally well evidenced: Orifice Flow Rate Calculator has 114 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Ariel Quick Size ships an update every 7 months, Orifice Flow Rate Calculator every 6 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Ariel Quick Size | Orifice Flow Rate Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ariel-quick-size/id571901596/reviews)** | [4.9 (114 ratings)](https://appshunter.io/ios/app/orifice-flow-rate-calculator/id1439701941/reviews) |
| Number of ratings | 2 | **114** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 31 MB | 2 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ariel Corporation](https://appshunter.io/developer/571901606) | [R.L. Laughlin & Company, Inc.](https://appshunter.io/developer/1438670681) |

## 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


### Orifice Flow Rate Calculator

[App page](https://appshunter.io/ios/app/orifice-flow-rate-calculator/id1439701941)

Easily calculate natural gas orifice flow rates using the AGA 3 standard. This utility app allows users to determine MCF production for a given duration, save calculations, and export data to CSV. It functions offline, requiring no cell service.

**Highlights:** Orifice MCF Calculator, Rotary (Direct) MCF Calculator, Save all calculations, View saved inputs and calculations, Export calculations to CSV

**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 Orifice Flow Rate Calculator free?

Orifice Flow Rate Calculator is free to download, with no in-app purchases.

### Which has better reviews, Ariel Quick Size or Orifice Flow Rate Calculator?

Ariel Quick Size is rated higher. Ariel Quick Size averages 5.0 out of 5 from 2 ratings, while Orifice Flow Rate Calculator averages 4.9 from 114 ratings.

### Do Ariel Quick Size or Orifice Flow Rate Calculator have ads?

Neither Ariel Quick Size nor Orifice Flow Rate Calculator shows ads.

### Which is updated more often, Ariel Quick Size or Orifice Flow Rate Calculator?

Ariel Quick Size ships an update every 7 months, and Orifice Flow Rate Calculator every 6 months. Most recently, Ariel Quick Size was updated on November 1, 2026 and Orifice Flow Rate Calculator on November 2, 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.*