# Decibel Meter Plus Pro vs ScanBatch · QR Code Scanner

The clearest difference is price: ScanBatch · QR Code Scanner at Free against Decibel Meter Plus Pro's $0.99. ScanBatch · QR Code Scanner also leads on rating (5.0 vs 3.8) and update cadence (every 2 weeks vs every 2 months). Decibel Meter Plus Pro's advantage is ratings volume (80 vs 3). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ScanBatch · QR Code Scanner is free to download; Decibel Meter Plus Pro costs $0.99 up front. Decibel Meter Plus Pro sells 1 one-off in-app purchase and ScanBatch · QR Code Scanner sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScanBatch · QR Code Scanner holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Decibel Meter Plus Pro has 80 ratings behind it against 3, so its average is the more settled of the two.

Decibel Meter Plus Pro ships an update every 2 months, ScanBatch · QR Code Scanner every 2 weeks. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Decibel Meter Plus Pro | ScanBatch · QR Code Scanner |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.8 (80 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/scanbatch-qr-code-scanner/id6771756857/reviews)** |
| Number of ratings | **80** | 3 |
| Positive reviews | 52.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 12 MB | 54 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [晶 黄](https://appshunter.io/developer/1896594046) |

## 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 | $2.99 | one-time |


### ScanBatch · QR Code Scanner

[App page](https://appshunter.io/ios/app/scanbatch-qr-code-scanner/id6771756857)

This tool allows for efficient batch scanning and generation of QR codes and barcodes. It supports numerous code formats and offers features like automatic deduplication, data import/export, and customizable QR code designs. Operate locally and offline with no account required.

**Highlights:** Batch scanning and generation, Support for 21 code formats, Automatic deduplication and counting, Photo scanning from library, Export to Excel, CSV, PDF, Spreadsheet-driven code generation, Customizable QR code designs, Local and offline operation

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $2.99 | per 7 days |
| Monthly Pro | $4.99 | per month |
| Annual Pro | $14.99 | per year |
| Lifetime Pro | $17.99 | one-time |


## Frequently asked questions

### Is Decibel Meter Plus Pro free?

Decibel Meter Plus Pro costs $0.99, and also offers in-app purchases.

### Is ScanBatch · QR Code Scanner free?

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

### Which has better reviews, Decibel Meter Plus Pro or ScanBatch · QR Code Scanner?

ScanBatch · QR Code Scanner is rated higher. Decibel Meter Plus Pro averages 3.8 out of 5 from 80 ratings, while ScanBatch · QR Code Scanner averages 5.0 from 3 ratings.

### Do Decibel Meter Plus Pro or ScanBatch · QR Code Scanner have ads?

Neither Decibel Meter Plus Pro nor ScanBatch · QR Code Scanner shows ads.

### Which is updated more often, Decibel Meter Plus Pro or ScanBatch · QR Code Scanner?

Decibel Meter Plus Pro ships an update every 2 months, and ScanBatch · QR Code Scanner every 2 weeks. Most recently, Decibel Meter Plus Pro was updated on September 21, 2026 and ScanBatch · QR Code Scanner on September 18, 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.*