# Spek Spectrogram analyzer vs Spectrum

The clearest difference is in-app purchases: Spek Spectrogram analyzer at none against Spectrum's 1. Spek Spectrogram analyzer also leads on ads (none vs shown). Spectrum's advantage is iOS requirement (15.0 vs 18.2). On price, update cadence and device support there is nothing between them.

Both are free to download. Spectrum sells 1 one-off in-app purchase. Spek Spectrogram analyzer asks for nothing beyond the download.

Spek Spectrogram analyzer ships an update every 10 days, Spectrum every 8 days. The most recent releases landed on July 21, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Spek Spectrogram analyzer | Spectrum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spek-spectrogram-analyzer/id6778501151/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 8 days** |
| Monetization | Free | — |
| Size | 45 MB | 89 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pratik Zinzala](https://appshunter.io/developer/1866618369) | [SEONYONG LEE](https://appshunter.io/developer/6775892940) |

## What reviewers say

### Spek Spectrogram analyzer

[App page](https://appshunter.io/ios/app/spek-spectrogram-analyzer/id6778501151)

Visualize audio frequencies with detailed spectrograms. Inspect audio quality, identify compression artifacts, and analyze sound changes over time. Process audio locally for enhanced privacy and security.

**Highlights:** Detailed spectrogram visualization, Frequency and artifact analysis, Audio quality evaluation, Real-time microphone input, Integrated audio player, Customizable analysis settings, Pinch-to-zoom navigation

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

**In-app purchases:** none


### Spectrum

[App page](https://appshunter.io/ios/app/spectrum-audio-analyzer/id6787894411)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Spek Spectrogram analyzer free?

Spek Spectrogram analyzer is free to download, with no in-app purchases.

### Is Spectrum free?

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

### Do Spek Spectrogram analyzer or Spectrum have ads?

Spectrum shows ads; Spek Spectrogram analyzer does not.

### Which is updated more often, Spek Spectrogram analyzer or Spectrum?

Spek Spectrogram analyzer ships an update every 10 days, and Spectrum every 8 days. Most recently, Spek Spectrogram analyzer was updated on July 21, 2026 and Spectrum on September 18, 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.*