# ITAG GHG Calculator vs QR Code

The clearest difference is in-app purchases: ITAG GHG Calculator at none against QR Code's 2. ITAG GHG Calculator also leads on device support (3 vs 1) and iOS requirement (13.4 vs 16.0). QR Code's advantage is update cadence (every 2 days vs every 5 months). On price and ads there is nothing between them.

Both are free to download. QR Code sells 2 in-app purchases, starting at $6.99 per 7 days. ITAG GHG Calculator asks for nothing beyond the download.

ITAG GHG Calculator ships an update every 5 months, QR Code every 2 days. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | ITAG GHG Calculator | QR Code |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (30 ratings)](https://appshunter.io/ios/app/qr-code-scanner-and-reader-pro/id6642706959/reviews)** |
| Number of ratings | — | **30** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 26 MB | 10 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Sean Jeffries](https://appshunter.io/developer/1635764542) | [Geronimo Regino](https://appshunter.io/developer/1763632954) |

## What reviewers say

### ITAG GHG Calculator

[App page](https://appshunter.io/ios/app/itag-ghg-calculator/id6467931991)

**Features:** macOS Compatibility

**In-app purchases:** none


### QR Code

[App page](https://appshunter.io/ios/app/qr-code-scanner-and-reader-pro/id6642706959)

Easily scan and create QR codes and barcodes with automatic detection. Manage your scan history, customize generated codes with colors and logos, and secure your data with an app lock. Offers fast, seamless, and secure code management for personal and professional use.

**Highlights:** Scan and create QR codes/barcodes, Automatic code detection, Comprehensive history management, Customizable QR code appearance, App lock for added security, Fast and secure processing

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Weekly | $6.99 | per 7 days |


## Frequently asked questions

### Is ITAG GHG Calculator free?

ITAG GHG Calculator is free to download, with no in-app purchases.

### Is QR Code free?

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

### Do ITAG GHG Calculator or QR Code have ads?

Neither ITAG GHG Calculator nor QR Code shows ads.

### Which is updated more often, ITAG GHG Calculator or QR Code?

ITAG GHG Calculator ships an update every 5 months, and QR Code every 2 days. Most recently, ITAG GHG Calculator was updated on October 20, 2026 and QR Code on October 22, 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.*