# QSpec

> Mobile gas cylinder inventory and blend management tool with expiration tracking. (iPhone/iPad app by Linde GmbH.)

- Source: https://appshunter.io/ios/app/qspec/id1155111447 (this page in markdown: same URL + `.md`)
- Developer: [Linde GmbH](https://appshunter.io/developer/657403417)
- Category: Utilities, Business
- Price: Free
- Rating: 4.00/5 from 6 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 36 MB
- Released: 2016-09-20
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/qspec/id1155111447/reviews.md

## What is QSpec?

Unleash the power of productivity with Linde’s QSpec. Quickly verify gas blend components and mix accuracy, and track the expiration date of your gas blends to maintain optimal process performance. Simplify cylinder management and cylinder tracking by using your phone as a mobile database of your cylinder information with QSpec. Quickly access on-demand Electronic Certifications of Analysis (ECOA) for each cylinder you scanned into your phone.

QSpec Features:
•	Scan and store cylinder information, blend expiration dates and blend specifications in your phone. 
•	Set alerts to monitor and prevent gas blend expiration dates to ensure process quality.
•	Quickly retrieve and email ECOA’s
•	Create, store and email your cylinder reorder list.
•	Assign scanned cylinders to customizable locations to assist with cylinder tracking

## Key features

- 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

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/qspec/id1155111447/reviews.md

### 2/5 — Camera won’t scan at all

*2025-09-17*

Camera won’t scan at all and won’t focus on the qr code when it’s close, I tried it on the qr code on the cylinder and the one printed on the physical cert. Qr code has to be about 1.5 ft away to be in focus but won’t scan.

 I tried searching for it manually, serial number being the cylinder number and document number from the DocNumber given on the cert and could not find the cylinder.

Turns out Document number is the Lot number, NOT THE DOCUMENT NUMBER on the cert. 
 
So manual entry does work but is tedious.

### 2/5 — Was a very good tool

*2025-09-04*

Camera will not scan QR codes after upgrading to iphone 16

## Frequently asked questions about QSpec

### What is QSpec?

QSpec is a utility app designed to help users manage gas cylinder inventory, track blend components, and monitor expiration dates to ensure optimal process performance and maintain quality.

### How does QSpec help with cylinder tracking?

QSpec allows you to scan and store cylinder information, assign scanned cylinders to customizable locations, and use your phone as a mobile database for all your cylinder data.

### Can QSpec alert me about expiring gas blends?

Yes, QSpec allows you to set alerts to monitor and prevent gas blend expiration dates, ensuring you maintain optimal process performance and quality.

### How can I get Certificates of Analysis with QSpec?

QSpec provides quick access to on-demand Electronic Certificates of Analysis (ECOA) for each cylinder you scan into your phone. You can also retrieve and email these ECOAs easily.

### Does QSpec have ads?

No, QSpec does not contain advertisements.

### What devices does QSpec support?

QSpec is available for iPhone and iPad devices.

### How often is QSpec updated?

The latest version of QSpec is 3.1.1, which was last updated on January 15, 2026. This indicates a history of regular updates.

### What is the user rating for QSpec?

QSpec has a user rating of 4.0 stars based on 6 ratings.

## Version history (last 5 releases)

### 3.1.1 — 2026-01-15

-Bug fixes

### 3.1.0 — 2026-01-07

- Updated barcode scanner.
- Security Fixes.

### 2.1.2 — 2022-05-11

Praxair is now Linde!
-	You can now delete your account.
-	You can now scan a ProSpec EZ Cert QR code to retrieve the cylinder information.
-	You can now manually enter in a cylinder number and lot number to retrieve the cylinder information.
-	Fixed issues that could cause the application to crash.
-	Fixed issues where certain QR codes were not returning cylinder information.
-	Added security improvements.

### 1.5.0 — 2020-07-07

Fixed an issue that prevented the COA from being emailed.

### 1.4.0 — 2020-06-30

- You can now log into the app using your fingerprint.  
- You can now sort by date scanned.
- Lot number now appears on the overview screen.
- Fixed an issue that was preventing multiple scanned cylinders from appearing in the recently scanned list.
- Fixed an issue where dates were off by 1 day.
- Fixed an issue that would cause the incorrect cylinder data from appearing if a cylinder was previously scanned with a different lot number.

## Apps similar to QSpec

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [DeltaV CHARM DEWD](https://appshunter.io/ios/app/deltav-charm-dewd/id688891028) | 4.1 (14) | Free | Utilities |
| [Barometer & Altimeter & Thermo](https://appshunter.io/ios/app/barometer-and-altimeter-and-thermo/id1267360992) | 4.8 (9,093) | Free | Utilities |
| [Airgas SRVS](https://appshunter.io/ios/app/airgas-srvs/id875275554) | 3.6 (10) | Free | Utilities |
| [RedX Roof - Rafter Calculator](https://appshunter.io/ios/app/redx-roof-rafter-calculator/id1519896740) | 4.7 (810) | Free | Utilities |
| [EasyPeasy](https://appshunter.io/ios/app/easypeasy/id1510819420) | — | Free | Utilities |
| [QR Code Reader & Barcode Scan](https://appshunter.io/ios/app/qr-code-reader-and-barcode-scan/id1521174180) | 4.8 (71) | Free | Utilities |

## More apps by Linde GmbH

- [Gas Converter](https://appshunter.io/ios/app/gas-converter/id681227665)
- [Linde Healthcare Virtual World](https://appshunter.io/ios/app/linde-healthcare-virtual-world/id739688760)
- [Linde Virtual Cryo](https://appshunter.io/ios/app/linde-virtual-cryo/id803840737)
- [Afrox Shop](https://appshunter.io/ios/app/afrox-shop/id1046856113)
- [Linde Data Booklet](https://appshunter.io/ios/app/linde-data-booklet/id1094377291)

All apps by Linde GmbH: https://appshunter.io/developer/657403417

## Related topics

[qspec](https://appshunter.io/ios/topics/qspec) · [linde qspec](https://appshunter.io/ios/topics/linde-qspec)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*