Audio Spectrum Viewer vs Muzz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Audio Spectrum Viewer
Visualize the frequency content of your live audio environment with a dynamic waterfall spectrogram. Analyze sound systems, create audio fingerprints of environmental sounds, and save spectrograms with custom captions. Capture audio in the background for simultaneous recording and photography.
- Live audio frequency visualization
- Waterfall/spectrogram display
- Speaker and sound system analysis
- Environmental sound fingerprinting
- User-selectable gain and sample rate
- Save spectrograms with captions
- Save audio clips for playback
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Audio Spectrum Viewer is an easy to use app which will show the frequency content of your live audio environment in an easy to understand waterfall / spectrogram. This tool can be used to analyze the performance of speakers and sound systems, and to create audio fingerprint images of environmental sounds such as bird songs and other animal sounds. Audio Spectrum Viewer is a powerful tool with user-selectable gain, sample rate and other parameters to optimize for a particular setting. Spectrograms can be saved to the camera roll with a timestamped and customizable caption and the audio clips can be saved for later playback. Audio can be captured in the background so you can simultaneously take photos of birds while analyzing their sounds.
Muzz
Analyze audio signals with 21 different spectrum analyzers. Visualize fundamental frequencies, harmonics, and feedback for both beginners and experts. Supports loading audio files or using live microphone input.
- 21 spectrum analyzer types
- Load audio files
- Live audio mode
- Dark and light modes
- Peak enhancer
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Muzz is a professional-grade real-time spectrum analyzer built for audio technicians, acoustic engineers, musicians, and sound enthusiasts. Whether you're diagnosing room acoustics, analyzing live microphone input, inspecting harmonics and feedback, or studying the frequency characteristics of any audio signal — Muzz gives you the tools to see exactly what you're hearing. 21 spectrum graph types, from standard linear analyzers to advanced harmonic alignment and octave-aligned displays, give you flexibility no single visualization tool can match. NEW IN 1.0.8 — Live frequency axis: Hz markers (100–8kHz) displayed permanently along the bottom of every visualization — Long press anywhere on the visualization to pin the exact frequency at that point for 2 seconds — Continuous background audio: Muzz now keeps analyzing when your screen locks or you switch apps — critical for live monitoring sessions — CarPlay compatible: enabling the microphone no longer interrupts audio playing through your car system — Frequency labels adapt automatically to dark and light mode Core Features — Load any audio file and visualize its full spectrum in real time — Live analysis mode via device microphone — ideal for room acoustics, stage monitoring, and field work — Persistent Hz frequency axis on every visualization — Long press to inspect exact frequencies at any point on the spectrum — Peak enhancer: isolates spectral lines (harmonics, fundamentals) and suppresses percussive noise — Toggle visualization variants to explore alternative display modes — Gain and treble controls to calibrate the display to your signal level — Dark and light mode with automatic label color adaptation — Runs continuously in the background — no interruptions during live sessions 21 Spectrum Graph Types Bars Extended Bars Short Line Spectrum Music Spectrum Linear OAS Overlapped Octaves Octave Aligned Spectrum Elliptical OAS Spiral OAS Harmonic Alignment TriOct Spectrum Overlapped Harmonics Harmonograph Cymbal Rainbow Spectrum Waterfall Rainbow OAS Rainbow Ellipse Spinning Ellipse Out of the Rabbit Hole Down the Rabbit Hole For in-depth theory on each spectrum type, tap the info icon to access the full Visualizations Guide. Questions, bug reports, or feature ideas — we want to hear from you: amitnadir@gmail.com
Screenshots
Verdict
The clearest difference is price: Audio Spectrum Viewer at $0.99 against Muzz's $12.99. Audio Spectrum Viewer also leads on rating (4.3 vs 1.0) and review sentiment (67% vs 29%). Muzz's advantage is update cadence (fortnightly vs every 72 months) and device support (4 vs 2). On ratings volume, ads, in-app purchases and monetization model 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
Audio Spectrum Viewer costs $0.99 and Muzz $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Audio Spectrum Viewer holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 67% of Audio Spectrum Viewer's written reviews are positive against 29% of Muzz's.
Audio Spectrum Viewer ships an update every 72 months, Muzz fortnightly. Both last shipped on November 3, 2026.
| Parameter | Audio Spectrum Viewer | Muzz |
|---|---|---|
| Price | $0.99 — better | $12.99 |
| Rating | 4.3 (4 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 66.7% of reviews — better | 28.6% of reviews |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 72 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Steve Glenner | Amit Nadir |
Customer experience
Audio Spectrum Viewer
Muzz
In-app purchases
Audio Spectrum Viewer
No in-app purchases
Muzz
No in-app purchases








