# Audio Spectrum Analyzer Pro vs Retro Spectrum

The clearest difference is review sentiment: Retro Spectrum at 100% against Audio Spectrum Analyzer Pro's 57%. Retro Spectrum also leads on update cadence (every 3 weeks vs every 7 months) and rating (4.8 vs 4.4). Audio Spectrum Analyzer Pro's advantage is ratings volume (239 vs 8) and device support (3 vs 1). On price, ads, in-app purchases and monetization model 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 Retro Spectrum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Retro Spectrum holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 239 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 57% of Audio Spectrum Analyzer Pro's written reviews are positive against 100% of Retro Spectrum's.

Audio Spectrum Analyzer Pro ships an update every 7 months, Retro Spectrum every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Audio Spectrum Analyzer Pro | Retro Spectrum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (239 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews) | **[4.8 (8 ratings)](https://appshunter.io/ios/app/retro-spectrum/id6780568680/reviews)** |
| Number of ratings | **239** | 8 |
| Positive reviews | 57.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 40 MB | 4 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [TAKUMA FUJITSUKA](https://appshunter.io/developer/6780568682) |

## 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


### Retro Spectrum

[App page](https://appshunter.io/ios/app/retro-spectrum/id6780568680)

Transform your phone into a retro audio visualizer for your car or desk. It analyzes sound from your speakers in real-time, displaying dynamic visuals inspired by classic 80s-90s car stereos. Enjoy multiple retro skins and track identification for a unique audio-visual experience.

**Highlights:** Real-time spectrum analyzer, Retro 80s-90s car stereo style, Listens via microphone to any speaker source, Multiple retro skin options, Now Playing song identification, Desk mode with clock and date

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skin Pack | $1.99 | 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 Retro Spectrum free?

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

### Which has better reviews, Audio Spectrum Analyzer Pro or Retro Spectrum?

Retro Spectrum is rated higher. Audio Spectrum Analyzer Pro averages 4.4 out of 5 from 239 ratings, while Retro Spectrum averages 4.8 from 8 ratings.

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

Neither Audio Spectrum Analyzer Pro nor Retro Spectrum shows ads.

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

Audio Spectrum Analyzer Pro ships an update every 7 months, and Retro Spectrum every 3 weeks. Most recently, Audio Spectrum Analyzer Pro was updated on October 26, 2026 and Retro Spectrum on October 24, 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.*