# Audio / Spectrum Analyzer vs STETSOM STX DSP

Audio / Spectrum Analyzer and STETSOM STX DSP both sit at 4.6 stars, but that hides the real split: 79% of Audio / Spectrum Analyzer's written reviews are positive against 39% of STETSOM STX DSP's. STETSOM STX DSP's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Audio / Spectrum Analyzer sells 1 one-off in-app purchase. STETSOM STX DSP asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Audio / Spectrum Analyzer against 4.6 for STETSOM STX DSP. Both are backed by a comparable volume of ratings — 1.1K and 424 respectively. Written reviews are what separate them: 79% of Audio / Spectrum Analyzer's written reviews are positive against 39% of STETSOM STX DSP's.

Audio / Spectrum Analyzer ships an update every 2 weeks, STETSOM STX DSP every 8 days. Both last shipped on October 27, 2026.

## The numbers

| Metric | Audio / Spectrum Analyzer | STETSOM STX DSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews) | **[4.6 (424 ratings)](https://appshunter.io/ios/app/stetsom-stx-dsp/id1615834724/reviews)** |
| Number of ratings | **1.1K** | 424 |
| Positive reviews | **78.6% of reviews** | 39.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 71 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) | [STETSOM ELETRÔNICA LTDA](https://appshunter.io/developer/1110480569) |

## 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


### STETSOM STX DSP

[App page](https://appshunter.io/ios/app/stetsom-stx-dsp/id1615834724)

Control your Stetsom audio system directly from your smartphone. Adjust your automotive sound system in real-time and monitor technical information with this app. Explore features in demo mode if you don't own a compatible processor.

**Highlights:** Real-time audio system adjustment, Monitor technical information, Bluetooth communication, Control compatible digital processors, Demo mode for exploration

**Features:** 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 STETSOM STX DSP free?

STETSOM STX DSP is free to download, with no in-app purchases.

### Which has better reviews, Audio / Spectrum Analyzer or STETSOM STX DSP?

STETSOM STX DSP is rated higher. Audio / Spectrum Analyzer averages 4.6 out of 5 from 1.1K ratings, while STETSOM STX DSP averages 4.6 from 424 ratings.

### Do Audio / Spectrum Analyzer or STETSOM STX DSP have ads?

Audio / Spectrum Analyzer shows ads; STETSOM STX DSP does not.

### Which is updated more often, Audio / Spectrum Analyzer or STETSOM STX DSP?

Audio / Spectrum Analyzer ships an update every 2 weeks, and STETSOM STX DSP every 8 days. Most recently, Audio / Spectrum Analyzer was updated on October 27, 2026 and STETSOM STX DSP on October 27, 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.*