Audio Spectrum Analyzer Pro vs STETSOM STX DSP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Audio Spectrum Analyzer Pro
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.
- 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
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Audio Spectrum Analyzer is a powerful real-time audio analysis app. Full of features yet very simple to use. Sound level meter (db meter a-weighted, noise rating, noise criterion) included. Feature Highlights: • Octave Band Real Time Analyzer • FFT Plot (Fast Fourier Transform) • Linear and logarithm scales • Up to 16384 FFT size • A lot of available window functions • Tracking for max value • Max and Min for any selected frequency • Stunned graphics • Reliable measurement accuracy with pre-calibrated profiles for 3 device-integrated mics • Additional precision with integrated support and pre-calibrated profiles for AirPods, AirPods Pro • Safer measurements using the Airpods Pro noise cancellation feature • Support for external microphones (wired or via Bluetooth) • Noise Rating and Noise Criterion support And many many more... Terms of Use: https://www.iubenda.com/terms-and-conditions/94359518
STETSOM STX DSP
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.
- Real-time audio system adjustment
- Monitor technical information
- Bluetooth communication
- Control compatible digital processors
- Demo mode for exploration
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Full control of your Stetsom audio system directly from your smartphone! The official Stetsom app was developed to offer intuitive, precise and complete control of several of the brand's digital processors, compatible with the STX2436BT, STX2448BT and STX2496BT processors. Whether to adjust your automotive sound system in real time or to monitor technical information, with multiple functionalities, the app delivers a modern and connected experience through Bluetooth communication. How to use: 1. Install the app on your device 2. Activate Bluetooth 3. Turn on the compatible processor 4. Open the app and select the desired processor from the list If you do not yet have a compatible Stetsom processor, activate the demo mode and explore all the features available in the app. Optimize the sound, customize the experience and have full control of your Stetsom processors in the palm of your hand!
Screenshots
Verdict
The clearest difference is in-app purchases: STETSOM STX DSP at none against Audio Spectrum Analyzer Pro's 2. STETSOM STX DSP also leads on update cadence (every 8 days vs every 7 months) and rating (4.6 vs 4.4). Audio Spectrum Analyzer Pro's advantage is review sentiment (57% vs 39%) and iOS requirement (13.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. STETSOM STX DSP asks for nothing beyond the download.
STETSOM STX DSP holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 239 and 435 respectively. Written reviews complicate that: 57% of Audio Spectrum Analyzer Pro's written reviews are positive against 39% of STETSOM STX DSP's, so the app with the better star average is not the one people write more warmly about.
Audio Spectrum Analyzer Pro ships an update every 7 months, STETSOM STX DSP every 8 days. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.
| Parameter | Audio Spectrum Analyzer Pro | STETSOM STX DSP |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (239 ratings) | 4.6 (435 ratings) — better |
| Positive reviews | 57.4% of reviews — better | 39.3% of reviews |
| Number of ratings | 239 | 435 — better |
| Update frequency | Every 7 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 40 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | Vlad Polyanskiy | STETSOM ELETRÔNICA LTDA |
Customer experience
Audio Spectrum Analyzer Pro
STETSOM STX DSP
Bugs and requests
Audio Spectrum Analyzer Pro
Reported bugs
11 issues- 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
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- App won't uninstall properly
- Malware warnings appearing
- Help links and support pages broken/dead
- Incorrect dB level readings (off by ~20dB)
- Recording functions non-functional
- Half black screen in certain orientations
Requested features
11 requests- Audio file upload capability
- White noise/test signal generator
- Microphone calibration file support
- Recording functionality with timestamp
- Multiple frequency cursors for comparison
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- Ability to compare before/after curves
- Adjustable dB level zoom/scaling
- Saved settings and personalizations
- Audio Unit (AUV3) plugin support
- Peak hold reset button
- Time-domain recording in spectrograph mode
STETSOM STX DSP
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Audio Spectrum Analyzer Pro
- Premium Mode7 Days trial$19.991 Year
- Premium Pack$29.99
STETSOM STX DSP
No in-app purchases
Questions
Is Audio Spectrum Analyzer Pro free?
Is STETSOM STX DSP free?
Which has better reviews, Audio Spectrum Analyzer Pro or STETSOM STX DSP?
Do Audio Spectrum Analyzer Pro or STETSOM STX DSP have ads?
Which is updated more often, Audio Spectrum Analyzer Pro or STETSOM STX DSP?
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