# QRCode Scanner · CodeGenerator vs CO2 Calculator

The clearest difference is update cadence: QRCode Scanner · CodeGenerator at weekly against CO2 Calculator's every 4 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. QRCode Scanner · CodeGenerator sells 2 in-app purchases, starting at $5.99 per 7 days and CO2 Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

QRCode Scanner · CodeGenerator ships an update weekly, CO2 Calculator every 4 weeks. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | QRCode Scanner · CodeGenerator | CO2 Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/qrcode-scanner-codegenerator/id6760458257/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 6.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 64 MB | 7 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Wellresion Limited](https://appshunter.io/developer/1864858112) | [Levin David Schwab](https://appshunter.io/developer/1896432297) |

## What reviewers say

### QRCode Scanner · CodeGenerator

[App page](https://appshunter.io/ios/app/qrcode-scanner-codegenerator/id6760458257)

Easily scan QR codes from your camera or photos, and generate your own for text, social media links, or WiFi connections. Keep a history of all your scans and access them anytime.

**Highlights:** Scan QR codes from camera, Generate QR codes for text, Generate social media link QR codes, Scan QR codes from images, Connect to WiFi via QR code, Maintain scan history

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QRCode Scanner Ad-Free | $5.99 | per 7 days |
| QRCode Scanner Ad-Free | $15.99 | per year |


### CO2 Calculator

[App page](https://appshunter.io/ios/app/co2-calculator-planted-tank/id6796387320)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CO2Scape Pro | $5.99 | one-time |


## Frequently asked questions

### Is QRCode Scanner · CodeGenerator free?

QRCode Scanner · CodeGenerator is free to download, with in-app purchases available.

### Is CO2 Calculator free?

CO2 Calculator is free to download, with in-app purchases available.

### Do QRCode Scanner · CodeGenerator or CO2 Calculator have ads?

Both QRCode Scanner · CodeGenerator and CO2 Calculator show ads.

### Which is updated more often, QRCode Scanner · CodeGenerator or CO2 Calculator?

QRCode Scanner · CodeGenerator ships an update weekly, and CO2 Calculator every 4 weeks. Most recently, QRCode Scanner · CodeGenerator was updated on October 31, 2026 and CO2 Calculator on October 29, 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.*