Comparison

FFT Plot vs Audio Spectrum Analyzer Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FFT Plot

This real-time audio analysis app provides precision sound measurement and visualization. It's ideal for detecting sound issues, room tuning, and speaker calibration, offering detailed frequency analysis for musicians and audio professionals.

Highlights
  • Real-time audio analysis
  • Frequency detection
  • Averaging options
  • Window functions
  • Linear and logarithmic scales
  • Weighting options
  • Draggable cursors
Read full description

***** "I use this app to detect sound feedback problems on live show and it became helpful and practic." FFT Plot is a powerful real-time audio analysis app. Designed with musicians and recording engineers in mind, it can also be used by anyone interested in the world of sound. Ideal for room tuning or speaker tuning, the app enables portable, precision audio measurement and visualization. Feature Highlights: ● FFT Size (2048 to 16384 points) ● Fast, Slow and Infinite Averaging ● Window function (Hamming, Hann, Rect) ● Peak Frequency detection ● Linear and Logarithmic scale ● Toggle between Flat, A and C weighting ● Pan to adjust visible dB range ● Draggable cursors ● iPhone X ready Audio credits: "Evening Birdsong" and "Cuckoo" by Benboncan

About

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.

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
Read full description

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

FFT Plot1 screens
Audio Spectrum Analyzer Pro4 screens

Verdict

The call

The clearest difference is price: Audio Spectrum Analyzer Pro at Free against FFT Plot's $9.99. Audio Spectrum Analyzer Pro also leads on update cadence (every 7 months vs every 17 months). FFT Plot's advantage is in-app purchases (none vs 2) and rating (4.8 vs 4.4). On 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

CostPrice · In-app purchases · Ads · Monetization

Audio Spectrum Analyzer Pro is free to download; FFT Plot costs $9.99 up front. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. FFT Plot asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FFT Plot holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 90 and 238 respectively. Written reviews point the same way: 84% of FFT Plot's written reviews are positive against 57% of Audio Spectrum Analyzer Pro's.

UpkeepUpdate frequency

FFT Plot ships an update every 17 months, Audio Spectrum Analyzer Pro every 7 months. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
FFT Plot versus Audio Spectrum Analyzer Pro: the parameters behind the verdict, then further details
ParameterFFT PlotAudio Spectrum Analyzer Pro
Price$9.99Free — better
Rating4.8 (90 ratings) — better4.4 (238 ratings)
Positive reviews84.4% of reviews — better57.4% of reviews
Number of ratings90238 — better
Update frequencyEvery 17 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size7 MB40 MB
Age rating4+4+
DeveloperONYX AppsVlad Polyanskiy

Customer experience

FFT Plot

All ratings90 ratings
Positive93.3%
Neutral2.2%
Negative4.4%
Written reviews109 reviews
Positive84.4%
Neutral6.4%
Negative9.2%

Audio Spectrum Analyzer Pro

All ratings238 ratings
Positive85.3%
Neutral4.6%
Negative10.1%
Written reviews183 reviews
Positive57.4%
Neutral7.1%
Negative35.5%

Bugs and requests

FFT Plot

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 more
  • 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 more
  • 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

None

FFT Plot

No in-app purchases

2 purchases

Audio Spectrum Analyzer Pro

Subscriptions1
  • Premium Mode7 Days trial$19.991 Year
One-time1
  • Premium Pack$29.99

Questions

Is FFT Plot free?
FFT Plot costs $9.99, 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, FFT Plot or Audio Spectrum Analyzer Pro?
FFT Plot is rated higher. FFT Plot averages 4.8 out of 5 from 90 ratings, while Audio Spectrum Analyzer Pro averages 4.4 from 238 ratings.
Do FFT Plot or Audio Spectrum Analyzer Pro have ads?
Neither FFT Plot nor Audio Spectrum Analyzer Pro shows ads.
Which is updated more often, FFT Plot or Audio Spectrum Analyzer Pro?
FFT Plot ships an update every 17 months, and Audio Spectrum Analyzer Pro every 7 months. Most recently, FFT Plot was updated on September 23, 2026 and Audio Spectrum Analyzer Pro on September 24, 2026.

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