# Noise Spectrum Logger vs Speed Reading

The clearest difference is in-app purchases: Speed Reading at none against Noise Spectrum Logger's 1. Noise Spectrum Logger's advantage is iOS requirement (15.5 vs 26.4). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Noise Spectrum Logger | Speed Reading |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/noise-spectrum-logger/id1153920486/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Free | — |
| Size | 5 MB | 9 MB |
| Requires iOS | **15.5** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Yukiko Iwai](https://appshunter.io/developer/965630131) | [Chingiz Zholdaspayev](https://appshunter.io/developer/1529449461) |

## 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 |


### Speed Reading

[App page](https://appshunter.io/ios/app/speed-reading-speed-reader/id6795872778)

**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 Speed Reading free?

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

### Do Noise Spectrum Logger or Speed Reading have ads?

Neither Noise Spectrum Logger nor Speed Reading 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.*