# Scanner vs Impulse Noise Decibel Meter

The clearest difference is iOS requirement: Scanner at 15.6 against Impulse Noise Decibel Meter's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Scanner | Impulse Noise Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 40 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marcin Slusarek](https://appshunter.io/developer/1453324891) | [Tigran Mkhitaryan](https://appshunter.io/developer/602761285) |

## What reviewers say

### Scanner

[App page](https://appshunter.io/ios/app/scanner-qr-and-barcode-reader/id1644206226)

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

**In-app purchases:** none


### Impulse Noise Decibel Meter

[App page](https://appshunter.io/ios/app/impulse-noise-decibel-meter/id6780625581)

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

**In-app purchases:** none


## Frequently asked questions

### Is Scanner free?

Scanner is free to download, with no in-app purchases.

### Is Impulse Noise Decibel Meter free?

Impulse Noise Decibel Meter is free to download, with no in-app purchases.

### Do Scanner or Impulse Noise Decibel Meter have ads?

Neither Scanner nor Impulse Noise Decibel Meter shows ads.

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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.*