# Gas Manager vs QR Code & Barcode Generator

The clearest difference is price: QR Code & Barcode Generator at Free against Gas Manager's $2.99. QR Code & Barcode Generator also leads on rating (4.8 vs 4.0) and review sentiment (100% vs 67%). On update cadence, ads, in-app purchases and device support there is nothing between them.

QR Code & Barcode Generator is free to download; Gas Manager costs $2.99 up front. Gas Manager sells 3 one-off in-app purchases and QR Code & Barcode Generator sells 7 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

QR Code & Barcode Generator holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: QR Code & Barcode Generator has 56 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of Gas Manager's written reviews are positive against 100% of QR Code & Barcode Generator's.

Gas Manager ships an update every 4 months, QR Code & Barcode Generator every 2 months. Both last shipped on October 10, 2026.

## The numbers

| Metric | Gas Manager | QR Code & Barcode Generator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/gas-manager-nitrox-and-trimix/id500438406/reviews) | **[4.8 (56 ratings)](https://appshunter.io/ios/app/qr-code-and-barcode-generator/id6741314024/reviews)** |
| Number of ratings | 2 | **56** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 16 MB | 57 MB |
| Requires iOS | 26.0 | **15.5** |
| Devices | **iPhone, iPad, Vision Pro** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryan Booker](https://appshunter.io/developer/1200695611) | [Flowriz LLC](https://appshunter.io/developer/1246562246) |

## What reviewers say

### Gas Manager

[App page](https://appshunter.io/ios/app/gas-manager-nitrox-and-trimix/id500438406)

This app provides tools for planning and blending diving gases, including nitrox and trimix. It offers calculators for partial pressure blending, top-offs, and best mixes, along with calculations for MOD, END, EAD, and EDD.

**Highlights:** Nitrox and trimix partial pressure blending, Top off calculator, Best mix calculator, MOD calculation, END, EAD, and EDD calculation

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Leave an Espresso Sized Tip | $2.99 | one-time |
| Tip a Bag of Beans | $8.99 | one-time |
| Tip a Big Bag of Beans | $29.99 | one-time |


### QR Code & Barcode Generator

[App page](https://appshunter.io/ios/app/qr-code-and-barcode-generator/id6741314024)

Easily scan and generate QR codes and barcodes for various purposes. Compare product prices, create custom codes for social media, and save your scan history. Optimized for all devices with a user-friendly interface and dark mode support.

**Highlights:** QR Code & Barcode Scanner, Fast & Accurate Scanning, QR Code Generator, Social Media QR Codes, Share & Save Codes, History & Favorites

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $3.99 | per 7 days |
| Monthly Access | $4.99 | per month |
| Monthly Access | $8.99 | per month |
| One Time Offer Yearly | $14.99 | per year |
| Yearly Access | $29.99 | per year |
| Yearly Access | $39.99 | per year |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Gas Manager free?

Gas Manager costs $2.99, and also offers in-app purchases.

### Is QR Code & Barcode Generator free?

QR Code & Barcode Generator is free to download, with in-app purchases available.

### Which has better reviews, Gas Manager or QR Code & Barcode Generator?

QR Code & Barcode Generator is rated higher. Gas Manager averages 4.0 out of 5 from 2 ratings, while QR Code & Barcode Generator averages 4.8 from 56 ratings.

### Do Gas Manager or QR Code & Barcode Generator have ads?

Neither Gas Manager nor QR Code & Barcode Generator shows ads.

### Which is updated more often, Gas Manager or QR Code & Barcode Generator?

Gas Manager ships an update every 4 months, and QR Code & Barcode Generator every 2 months. Most recently, Gas Manager was updated on October 10, 2026 and QR Code & Barcode Generator on October 10, 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.*