# Audio Spectrum Analyzer Pro vs Proof Audio Analyzer

The clearest difference is iOS requirement: Audio Spectrum Analyzer Pro at 13.0 against Proof Audio Analyzer's 16.0. On price, ads, 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 Proof Audio Analyzer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Audio Spectrum Analyzer Pro | Proof Audio Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (239 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews)** | — |
| Number of ratings | **239** | — |
| Positive reviews | 57.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 6 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [Warren Labs](https://appshunter.io/developer/6792763836) |

## 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


### Proof Audio Analyzer

[App page](https://appshunter.io/ios/app/proof-audio-analyzer/id6813702023)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Measuring | $79.00 | 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 Proof Audio Analyzer free?

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

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

Neither Audio Spectrum Analyzer Pro nor Proof Audio Analyzer 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.*