# Decibel Meter Noise Detector vs Image Compressor | Reduce Size

The clearest difference is in-app purchases: Image Compressor | Reduce Size at none against Decibel Meter Noise Detector's 3. Decibel Meter Noise Detector's advantage is ads (none vs shown) and iOS requirement (13.0 vs 17.6). On price and device support there is nothing between them.

Both are free to download. Decibel Meter Noise Detector sells 3 in-app purchases, starting at $4.99 per 7 days. Image Compressor | Reduce Size asks for nothing beyond the download.

## The numbers

| Metric | Decibel Meter Noise Detector | Image Compressor | Reduce Size |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/decibel-meter-noise-detector/id6745646643/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 9 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen MC Jisu Technology Co., Ltd.](https://appshunter.io/developer/1808919688) | [Hritik Arthur](https://appshunter.io/developer/6785072752) |

## What reviewers say

### Decibel Meter Noise Detector

[App page](https://appshunter.io/ios/app/decibel-meter-noise-detector/id6745646643)

This tool measures ambient noise levels in decibels (dB) in real-time. It allows users to record audio, capture photos with decibel data, and view historical noise level changes. Reports can be generated and exported for reference.

**Highlights:** Real-time decibel detection, Audio recording with peak decibel marking, Multimedia evidence collection with watermarks, Real-time chart display of noise changes, Historical decibel record viewing, Data detection report export

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Member | $4.99 | per 7 days |
| One year membership | $45.00 | per year |
| Life member | $19.99 | one-time |


### Image Compressor | Reduce Size

[App page](https://appshunter.io/ios/app/image-compressor-reduce-size/id6794672655)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter Noise Detector free?

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

### Is Image Compressor | Reduce Size free?

Image Compressor | Reduce Size is free to download, with no in-app purchases.

### Do Decibel Meter Noise Detector or Image Compressor | Reduce Size have ads?

Image Compressor | Reduce Size shows ads; Decibel Meter Noise Detector 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.*