# Audio Spectrum Analyzer Pro vs Spectrum

The clearest difference is ads: Audio Spectrum Analyzer Pro at none against Spectrum's shown. Audio Spectrum Analyzer Pro also leads on iOS requirement (13.0 vs 15.0). Spectrum's advantage is update cadence (every 8 days vs every 7 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year and Spectrum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Audio Spectrum Analyzer Pro ships an update every 7 months, Spectrum every 8 days. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Audio Spectrum Analyzer Pro | Spectrum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (238 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews)** | — |
| Number of ratings | **238** | — |
| Positive reviews | 57.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 89 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [SEONYONG LEE](https://appshunter.io/developer/6775892940) |

## What reviewers say

### Audio Spectrum Analyzer Pro

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806)

Analyze sound frequencies in real-time with this powerful tool. It offers detailed octave band analysis, FFT plots, and various measurement scales. Supports multiple microphones and noise analysis features for accurate audio insights.

**Highlights:** Octave Band Real Time Analyzer, FFT Plot (Fast Fourier Transform), Sound level meter (dB meter), Noise Rating and Noise Criterion support, Support for external microphones, Pre-calibrated mic profiles

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mode | $19.99 | per year |
| Premium Pack | $29.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy-to-use interface
- 💰 Completely free with no ads
- 🎯 Accurate frequency and spectrum analysis
- 📊 Multiple visualization modes (FFT, spectrograph, bar display)
- 🔧 Professional-grade audio measurement tool

**What reviewers complain about**

- 💸 Aggressive subscription/paywall nags
- 🔄 Frequent iOS compatibility issues after updates
- 📉 Features moved behind paywall in recent updates
- 🐛 App crashes on startup (especially iOS 16/26)
- ⚠️ Misleading free trial that requires payment

**Reported bugs**

- App crashes on iOS 16 and iOS 26 launches
- FFT resolution not working after iOS updates
- Graph display freezes or becomes unresponsive
- Spectrograph mode too slow on newer iPhones
- Frequency alignment issues with dynamic display

**Requested features**

- Audio file upload capability
- White noise/test signal generator
- Microphone calibration file support
- Recording functionality with timestamp
- Multiple frequency cursors for comparison


### 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 Audio Spectrum Analyzer Pro free?

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

### Is Spectrum free?

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

### Do Audio Spectrum Analyzer Pro or Spectrum have ads?

Spectrum shows ads; Audio Spectrum Analyzer Pro does not.

### Which is updated more often, Audio Spectrum Analyzer Pro or Spectrum?

Audio Spectrum Analyzer Pro ships an update every 7 months, and Spectrum every 8 days. Most recently, Audio Spectrum Analyzer Pro was updated on September 24, 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.*