# Decibel Meter vs QRCodeMaker

The clearest difference is price: Decibel Meter at Free against QRCodeMaker's $0.99. QRCodeMaker's advantage is in-app purchases (none vs 5). On update cadence, ads, device support and iOS requirement there is nothing between them.

Decibel Meter is free to download; QRCodeMaker costs $0.99 up front. Decibel Meter sells 5 in-app purchases, starting at $6.99 per month. QRCodeMaker asks for nothing beyond the download.

Decibel Meter ships an update weekly, QRCodeMaker every 4 days. The most recent releases landed on September 27, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Decibel Meter | QRCodeMaker |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.4 (36 ratings)](https://appshunter.io/ios/app/decibel-meter-db-sound-levels/id6738940890/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 4 MB |
| Requires iOS | **17.0** | 17.4 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Depict, Incorporated](https://appshunter.io/developer/1583344827) | [鹏飞 侯](https://appshunter.io/developer/1553207112) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-db-sound-levels/id6738940890)

Transform your smartphone into a professional sound measurement tool. Accurately measure real-time sound intensity with multiple weighting modes and track historical data. Ideal for professionals and enthusiasts monitoring noise levels.

**Highlights:** Real-time decibel readings, Accurate +/- 1 dB precision, A-weighted and C-weighted modes, Graphing and historical tracking, Background logging, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibels Plus | $6.99 | per month |
| Decibels Plus | $6.99 | per month |
| Decibels Plus | $44.99 | per year |
| Decibels Plus | $44.99 | per year |
| Decibels Plus - Lifetime | $199.99 | one-time |


### QRCodeMaker

[App page](https://appshunter.io/ios/app/qrcodemaker-magic-code/id6743001775)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter free?

Decibel Meter is free to download, with in-app purchases available.

### Is QRCodeMaker free?

QRCodeMaker costs $0.99, with no in-app purchases.

### Do Decibel Meter or QRCodeMaker have ads?

Neither Decibel Meter nor QRCodeMaker shows ads.

### Which is updated more often, Decibel Meter or QRCodeMaker?

Decibel Meter ships an update weekly, and QRCodeMaker every 4 days. Most recently, Decibel Meter was updated on September 27, 2026 and QRCodeMaker on September 21, 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.*