Spectre vs Audio Spectrum Analyzer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spectre
This audio analysis utility provides real-time FFT and oscilloscope views for sound input. Customize waveform display, control sample rates, and zoom in for detailed analysis on iOS devices.
- FFT Analysis
- Oscilloscope
- Customizable Waveform
- Linear & Logarithmic Forms
- Pause/Play Controls
- Zoom Functionality
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Spectre is an iOS audio analysis utility designed to be useful and visually appealing, making use of retina displays. Feature Highlights: • FFT(Fast Fourier Transform) Analysis • Oscilloscope • Customizable Features: Wave Amplitude, Sample/Time Control, Line Width • Linear & Logarithmic Wave Forms • Pause/Play Controls • Zoom in/out on the Waveform! • Optimized for iPhone 3,4,5 and iOS 7 Currently this app takes input from standard input, and external mics. Cross-app sound analysis coming soon! Waveform recording also coming soon!
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
Screenshots
Verdict
The clearest difference is price: Audio Spectrum Analyzer Pro at Free against Spectre's $0.99. Audio Spectrum Analyzer Pro also leads on rating (4.4 vs 3.0) and update cadence (every 7 months vs every 96 months). Spectre's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement 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 Analyzer Pro is free to download; Spectre costs $0.99 up front. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Spectre asks for nothing beyond the download.
Audio Spectrum Analyzer Pro holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 238 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 40% of Spectre's written reviews are positive against 57% of Audio Spectrum Analyzer Pro's.
Spectre ships an update every 96 months, Audio Spectrum Analyzer Pro every 7 months. The most recent releases landed on September 6, 2026 and September 24, 2026 respectively.
| Parameter | Spectre | Audio Spectrum Analyzer Pro |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.0 (2 ratings) | 4.4 (238 ratings) — better |
| Positive reviews | 40.0% of reviews | 57.4% of reviews — better |
| Number of ratings | 2 | 238 — better |
| Update frequency | Every 96 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 46 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Hand | Vlad Polyanskiy |
Customer experience
Spectre
Audio Spectrum Analyzer Pro
Bugs and requests
Spectre
Not enough reviews yet to summarise bugs or 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
Show 6 moreShow fewer
- 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
Show 6 moreShow fewer
- 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
In-app purchases
Spectre
No in-app purchases
Audio Spectrum Analyzer Pro
- Premium Mode7 Days trial$19.991 Year
- Premium Pack$29.99
Questions
Is Spectre free?
Is Audio Spectrum Analyzer Pro free?
Which has better reviews, Spectre or Audio Spectrum Analyzer Pro?
Do Spectre or Audio Spectrum Analyzer Pro have ads?
Which is updated more often, Spectre or Audio Spectrum Analyzer Pro?
Other comparisons
