# Audio / Spectrum Analyzer vs Spek Spectrogram analyzer

The clearest difference is in-app purchases: Spek Spectrogram analyzer at none against Audio / Spectrum Analyzer's 1. Spek Spectrogram analyzer also leads on ads (none vs shown) and rating (5.0 vs 4.6). Audio / Spectrum Analyzer's advantage is ratings volume (1K vs 1). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Spek Spectrogram analyzer holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Audio / Spectrum Analyzer has 1K ratings behind it against 1, so its average is the more settled of the two.

Audio / Spectrum Analyzer ships an update every 2 weeks, Spek Spectrogram analyzer every 10 days. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Audio / Spectrum Analyzer | Spek Spectrogram analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spek-spectrogram-analyzer/id6778501151/reviews)** |
| Number of ratings | **1K** | 1 |
| Positive reviews | 78.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 45 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) | [Pratik Zinzala](https://appshunter.io/developer/1866618369) |

## What reviewers say

### Audio / Spectrum Analyzer

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574)

This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.

**Highlights:** Simultaneous waveform and spectrum display, Configurable display layouts, Selectable FFT size and averaging, Frequency weighting options (Flat, dBA, dBC), Octave band analysis, Audio signal and noise generation, Peak hold and pitch meter

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Remove ads, High-Res analysis) | $11.99 | one-time |

**What reviewers like**

- 👍 Customizable features
- ⚙️ Accurate measurements
- 🚀 Helpful for troubleshooting
- 💡 Useful for ghost hunting

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔋 High battery and CPU usage
- 🚫 Inappropriate ads/content
- 🔒 Security concerns with payment info

**Reported bugs**

- Stuck on latest measurement
- White noise instead of expected functionality
- Disconnects AirPods

**Requested features**

- Sampling rate adjustment
- Wave shape tracking
- Audio file analysis
- Octave analysis


### 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


## Frequently asked questions

### Is Audio / Spectrum Analyzer free?

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

### Is Spek Spectrogram analyzer free?

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

### Which has better reviews, Audio / Spectrum Analyzer or Spek Spectrogram analyzer?

Spek Spectrogram analyzer is rated higher. Audio / Spectrum Analyzer averages 4.6 out of 5 from 1K ratings, while Spek Spectrogram analyzer averages 5.0 from 1 ratings.

### Do Audio / Spectrum Analyzer or Spek Spectrogram analyzer have ads?

Audio / Spectrum Analyzer shows ads; Spek Spectrogram analyzer does not.

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

Audio / Spectrum Analyzer ships an update every 2 weeks, and Spek Spectrogram analyzer every 10 days. Most recently, Audio / Spectrum Analyzer was updated on October 12, 2026 and Spek Spectrogram analyzer on September 29, 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.*