# The QR Code Reader & Generator vs Niagara 4Valve Controller

The clearest difference is in-app purchases: Niagara 4Valve Controller at none against The QR Code Reader & Generator's 10. Niagara 4Valve Controller also leads on ads (none vs shown). The QR Code Reader & Generator's advantage is update cadence (monthly vs every 2 months) and iOS requirement (11.2 vs 14.0). On price and device support there is nothing between them.

Both are free to download. The QR Code Reader & Generator sells 9 in-app purchases, starting at $3.99 per 7 days. Niagara 4Valve Controller asks for nothing beyond the download.

The QR Code Reader & Generator ships an update monthly, Niagara 4Valve Controller every 2 months. The most recent releases landed on June 1, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | The QR Code Reader & Generator | Niagara 4Valve Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (65 ratings)](https://appshunter.io/ios/app/the-qr-code-reader-and-generator/id1574736783/reviews)** | — |
| Number of ratings | **65** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 27 MB |
| Requires iOS | **11.2** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [After Dark Apps](https://appshunter.io/developer/1818648682) | [Niagara Automations](https://appshunter.io/developer/1459220336) |

## What reviewers say

### The QR Code Reader & Generator

[App page](https://appshunter.io/ios/app/the-qr-code-reader-and-generator/id1574736783)

Easily read and generate any QR code, including those for social media profiles and Wi-Fi. Customize your codes and utilize batch scanning to enhance productivity. This app offers a simple yet comprehensive solution for all your QR code needs.

**Highlights:** Read any QR code, Create any QR code link, Generate social media QR codes, Customize QR code appearance, Batch scan multiple QR codes, Enhance productivity and organization

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version - Weekly | $3.99 | per 7 days |
| Pro Version - Weekly | $5.99 | per 7 days |
| Pro Version - Yearly | $39.99 | per year |
| Pro Version - Yearly | $44.99 | per year |
| Pro - Unlock all features | $3.99 | one-time |
| Pro - Unlock all features | $7.99 | one-time |
| Pro - Unlock all features | $12.99 | one-time |
| Pro - Unlock all features | $49.99 | one-time |
| Pro - Unlock all features | $59.99 | one-time |


### Niagara 4Valve Controller

[App page](https://appshunter.io/ios/app/niagara-4valve-controller/id1641708221)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The QR Code Reader & Generator free?

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

### Is Niagara 4Valve Controller free?

Niagara 4Valve Controller is free to download, with no in-app purchases.

### Do The QR Code Reader & Generator or Niagara 4Valve Controller have ads?

The QR Code Reader & Generator shows ads; Niagara 4Valve Controller does not.

### Which is updated more often, The QR Code Reader & Generator or Niagara 4Valve Controller?

The QR Code Reader & Generator ships an update monthly, and Niagara 4Valve Controller every 2 months. Most recently, The QR Code Reader & Generator was updated on June 1, 2026 and Niagara 4Valve Controller on May 17, 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.*