# Decibel Meter Plus Pro vs Scan QR Code

The clearest difference is price: Scan QR Code at Free against Decibel Meter Plus Pro's $2.99. Scan QR Code also leads on in-app purchases (none vs 1). Decibel Meter Plus Pro's advantage is ads (none vs shown) and device support (3 vs 1). On iOS requirement there is nothing between them.

Scan QR Code is free to download; Decibel Meter Plus Pro costs $2.99 up front. Decibel Meter Plus Pro sells 1 one-off in-app purchase. Scan QR Code asks for nothing beyond the download.

## The numbers

| Metric | Decibel Meter Plus Pro | Scan QR Code |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.8 (80 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476/reviews)** | — |
| Number of ratings | **80** | — |
| Positive reviews | 52.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Monetization | Paid | — |
| Size | 12 MB | 9 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [HARDIK DINESHBHAI RADADIYA](https://appshunter.io/developer/6774569281) |

## What reviewers say

### Decibel Meter Plus Pro

[App page](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476)

Measure the sound levels around you with this utility app. It displays average, peak, and max values, offers decibel exposure time guidelines, and provides information on noise-induced hearing loss. The app also allows data recording and export for analysis.

**Highlights:** Measure sound levels, Display average, peak, and max values, Decibel exposure time guidelines, Information on noise-induced hearing loss, Record and export data, Calibrate measurements, Universal app support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Reports | $4.99 | one-time |


### Scan QR Code

[App page](https://appshunter.io/ios/app/scan-qr-code-barcode-now/id6784130283)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter Plus Pro free?

Decibel Meter Plus Pro costs $2.99, and also offers in-app purchases.

### Is Scan QR Code free?

Scan QR Code is free to download, with no in-app purchases.

### Do Decibel Meter Plus Pro or Scan QR Code have ads?

Scan QR Code shows ads; Decibel Meter Plus Pro does not.

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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.*