# Noise Spectrum Logger vs Know Your Crypto

The clearest difference is in-app purchases: Know Your Crypto at none against Noise Spectrum Logger's 1. Know Your Crypto also leads on update cadence (every 6 weeks vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Noise Spectrum Logger ships an update every 10 months, Know Your Crypto every 6 weeks. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Noise Spectrum Logger | Know Your Crypto |
| --- | --- | --- |
| 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 | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 5 MB | 15 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Yukiko Iwai](https://appshunter.io/developer/965630131) | [Emily Sudduth](https://appshunter.io/developer/1721274803) |

## 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 |


### Know Your Crypto

[App page](https://appshunter.io/ios/app/know-your-crypto/id6504634167)

**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 Know Your Crypto free?

Know Your Crypto is free to download, with no in-app purchases.

### Do Noise Spectrum Logger or Know Your Crypto have ads?

Neither Noise Spectrum Logger nor Know Your Crypto shows ads.

### Which is updated more often, Noise Spectrum Logger or Know Your Crypto?

Noise Spectrum Logger ships an update every 10 months, and Know Your Crypto every 6 weeks. Most recently, Noise Spectrum Logger was updated on November 2, 2026 and Know Your Crypto on November 8, 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.*