# QSpec vs Airgas

The clearest difference is review sentiment: Airgas at 100% against QSpec's 0%. Airgas also leads on rating (4.9 vs 4.0) and update cadence (every 6 months vs every 15 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.

Airgas holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 6 and 8 respectively. Written reviews point the same way: 0% of QSpec's written reviews are positive against 100% of Airgas's.

QSpec ships an update every 15 months, Airgas every 6 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | QSpec | Airgas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (6 ratings)](https://appshunter.io/ios/app/qspec/id1155111447/reviews) | **[4.9 (8 ratings)](https://appshunter.io/ios/app/airgas/id1546119931/reviews)** |
| Number of ratings | 6 | **8** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 36 MB | 43 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Linde GmbH](https://appshunter.io/developer/657403417) | [Airgas](https://appshunter.io/developer/875275557) |

## What reviewers say

### QSpec

[App page](https://appshunter.io/ios/app/qspec/id1155111447)

This app helps manage gas cylinder inventory, track blend components, and monitor expiration dates for optimal process performance. It simplifies cylinder tracking and provides on-demand electronic Certificates of Analysis.

**Highlights:** Scan and store cylinder information, Track blend expiration dates, Set expiration alerts, Retrieve and email ECOAs, Create and email reorder lists, Assign cylinders to locations

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

**In-app purchases:** none


### Airgas

[App page](https://appshunter.io/ios/app/airgas/id1546119931)

Quickly reorder frequently purchased gases, welding, and safety products using your existing account. Streamline your ordering process from your phone or tablet, saving time and effort.

**Highlights:** Quick reordering of up to 50 items, Access to frequently purchased items, Biometric login for fast access, Switch between multiple accounts, Order anytime, anywhere

**In-app purchases:** none


## Frequently asked questions

### Is QSpec free?

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

### Is Airgas free?

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

### Which has better reviews, QSpec or Airgas?

Airgas is rated higher. QSpec averages 4.0 out of 5 from 6 ratings, while Airgas averages 4.9 from 8 ratings.

### Do QSpec or Airgas have ads?

Neither QSpec nor Airgas shows ads.

### Which is updated more often, QSpec or Airgas?

QSpec ships an update every 15 months, and Airgas every 6 months. Most recently, QSpec was updated on October 24, 2026 and Airgas on October 21, 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.*