# Noise Spectrum Logger vs Danley Tools

The clearest difference is rating: Noise Spectrum Logger at 5.0 against Danley Tools's 4.0. Noise Spectrum Logger also leads on update cadence (every 10 months vs every 36 months) and iOS requirement (15.5 vs 17.0). Danley Tools's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Noise Spectrum Logger sells 1 one-off in-app purchase. Danley Tools asks for nothing beyond the download.

Noise Spectrum Logger holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Noise Spectrum Logger ships an update every 10 months, Danley Tools every 36 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | Noise Spectrum Logger | Danley Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/noise-spectrum-logger/id1153920486/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/danley-tools/id1538456260/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 36 months |
| Monetization | Free | Free |
| Size | 5 MB | 7 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Yukiko Iwai](https://appshunter.io/developer/965630131) | [sebastian rivas](https://appshunter.io/developer/506708461) |

## What reviewers say

### Noise Spectrum Logger

[App page](https://appshunter.io/ios/app/noise-spectrum-logger/id1153920486)

Visualize sound frequencies in real-time with a dynamic spectrum display. Log and export audio data for analysis, with options for smoothing and background processing. Access all features offline.

**Highlights:** Real-time spectrum display (20-20000Hz), Zoomable spectrum view, Maximum value highlighting, Spectrum smoothing options (Mean/RMS), Logging and CSV export, Background processing, Offline functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### Danley Tools

[App page](https://appshunter.io/ios/app/danley-tools/id1538456260)

This app provides essential calculators and reference materials for audio engineering professionals and enthusiasts. It offers tools to assist with various calculations needed in sound system design and analysis.

**Highlights:** Audio engineering calculators, Reference materials, Sound system design tools, Analysis assistance

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

**In-app purchases:** none


## Frequently asked questions

### Is Noise Spectrum Logger free?

Noise Spectrum Logger is free to download, with in-app purchases available.

### Is Danley Tools free?

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

### Which has better reviews, Noise Spectrum Logger or Danley Tools?

Noise Spectrum Logger is rated higher. Noise Spectrum Logger averages 5.0 out of 5 from 1 ratings, while Danley Tools averages 4.0 from 1 ratings.

### Do Noise Spectrum Logger or Danley Tools have ads?

Neither Noise Spectrum Logger nor Danley Tools shows ads.

### Which is updated more often, Noise Spectrum Logger or Danley Tools?

Noise Spectrum Logger ships an update every 10 months, and Danley Tools every 36 months. Most recently, Noise Spectrum Logger was updated on October 7, 2026 and Danley Tools on October 7, 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.*