# Decibel vs 騒音日記 Lite

The clearest difference is in-app purchases: 騒音日記 Lite at none against Decibel's 5. 騒音日記 Lite also leads on iOS requirement (13.0 vs 15.0). Decibel's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Decibel sells 2 in-app purchases, starting at $9.99 per 7 days. 騒音日記 Lite asks for nothing beyond the download.

## The numbers

| Metric | Decibel | 騒音日記 Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/decibel-db-sound-meter/id6755168199/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 194 MB | 26 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [芳 王](https://appshunter.io/developer/1674464173) | [Yuhei Takahashi](https://appshunter.io/developer/6792846189) |

## What reviewers say

### Decibel

[App page](https://appshunter.io/ios/app/decibel-db-sound-meter/id6755168199)

This app provides precise sound level measurements and audio analysis using professional weighting filters and real-time FFT spectrum analysis. It functions as a dosimeter for workplace safety and allows for easy sharing of dB data overlays on photos.

**Highlights:** Professional Frequency Weighting (ITU-R 468, A/B/C/Z), Real-Time FFT Spectrum Analysis, NIOSH & OSHA Standard Dosimeter, High-Precision Calibration, InstaDecibel Image Overlay, Live Activities Support, History Management & Export (PDF/M4A)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly VIP | $9.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |


### 騒音日記 Lite

[App page](https://appshunter.io/ios/app/lite/id6804412791)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel free?

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

### Is 騒音日記 Lite free?

騒音日記 Lite is free to download, with no in-app purchases.

### Do Decibel or 騒音日記 Lite have ads?

騒音日記 Lite shows ads; Decibel 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.*