# Audio RTA vs Audio Spectrum Analyzer Pro

The clearest difference is price: Audio Spectrum Analyzer Pro at Free against Audio RTA's $3.99. Audio Spectrum Analyzer Pro also leads on ratings volume (239 vs 25) and update cadence (every 7 months vs every 14 months). Audio RTA's advantage is in-app purchases (none vs 2) and review sentiment (81% vs 57%). On rating, ads, device support and iOS requirement there is nothing between them.

Audio Spectrum Analyzer Pro is free to download; Audio RTA costs $3.99 up front. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Audio RTA asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.4 for Audio RTA against 4.4 for Audio Spectrum Analyzer Pro. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 239 ratings behind it against 25, so its average is the more settled of the two. Written reviews are what separate them: 81% of Audio RTA's written reviews are positive against 57% of Audio Spectrum Analyzer Pro's.

Audio RTA ships an update every 14 months, Audio Spectrum Analyzer Pro every 7 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | Audio RTA | Audio Spectrum Analyzer Pro |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.4 (25 ratings)](https://appshunter.io/ios/app/audio-rta/id861969994/reviews)** | [4.4 (239 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews) |
| Number of ratings | 25 | **239** |
| Positive reviews | **81.3% of reviews** | 57.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 7 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 40 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DEXUS Pawel Krzywdzinski](https://appshunter.io/developer/377798036) | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) |

## What reviewers say

### Audio RTA

[App page](https://appshunter.io/ios/app/audio-rta/id861969994)

This application provides a real-time octave RTA analyzer, visualizing acoustic signals. It's useful for measuring audio equipment frequency response and analyzing musical instrument sounds. Features include various band resolutions, SPL metering, and FFT analysis.

**Highlights:** Octave RTA analyzer with multiple band resolutions, SPL Meter (dBFS) with dBZ weighting, Fast real-time response, Fast Fourier Transform (FFT) analysis, Zoom and pan functionality, Chart sharing and PNG export

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Audio RTA free?

Audio RTA costs $3.99, with no in-app purchases.

### Is Audio Spectrum Analyzer Pro free?

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

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

Audio RTA is rated higher. Audio RTA averages 4.4 out of 5 from 25 ratings, while Audio Spectrum Analyzer Pro averages 4.4 from 239 ratings.

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

Neither Audio RTA nor Audio Spectrum Analyzer Pro shows ads.

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

Audio RTA ships an update every 14 months, and Audio Spectrum Analyzer Pro every 7 months. Most recently, Audio RTA was updated on October 29, 2026 and Audio Spectrum Analyzer Pro on October 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.*