Comparison

RTA Audio 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

RTA Audio

Analyze audio in real-time with detailed frequency spectrum and waveform visualizations. Record and export your audio analysis results, including spectrograms and frequency tables, for sharing or archiving.

Highlights
  • Real-time audio analysis (FFT)
  • Recording and offline processing
  • Spectrogram and waveform visualization
  • Exportable analysis reports (PDF)
  • Adjustable resolution and frequency scale
  • Peak and RMS metering
Features
Read full description

RTA Audio Realtime analyzer with recording and Visualizer module with export. ••• Realtime analyzer ••• Realtime analyzer gives you the ability to analyze realtime audio input (built-in microphone or external audio accessory inputs) using Fast Fourier Transform with selected window function. You can also record the input for future offline processing or export. ••• Visualizer ••• This module presents you the results of offline audio analysis. Selecting previously captured recording gives the graph view, spectrogram and waveform of the audio data. Simple controls gives you the ability to play, loop, seek and change rate of the recording synchronized with analysis data presentation. Export function allows you to share or archive your analysis. Resulting PDF document contains basic recording information, spectrogram, peak & RMS graph and frequency table data with maximum peaks (with the time of the occurrence in recording) ••• Features ••• Resolution: 1/2 - 1/96 Octave Logarithmic frequency scale Fixed frequency range (20 - 20kHz) Tone scale view C₀- H₈ (A₄ = 440Hz) Peak hold graph Peak average graph RMS average graph Pointer (watch) function Peak and RMS input meter ••• Audio input specification ••• Audio session mode - measurement Input gain control Sample rate: 48000 Hz Bit depth: Float32 Channel: 1(mono) Frequency range: 20Hz - 20kHz Dynamic range: -100dB - 0dB ••• FFT (Fast Fourier Transform) specification ••• Frame size: 8192 Overlap: from 60% to 90% Smoothing Window: Bartlett-Hann, Blackman, Blackman-Harris (default), Blackman-Nuttell, Cosine, Flat Top, Gauss, Hamming, Hann, Lanczos, Nuttall, Rectangular, Triangular Hardware acceleration

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

RTA Audio4 screens
Audio Spectrum Analyzer Pro4 screens

Verdict

The call

The clearest difference is rating: Audio Spectrum Analyzer Pro at 4.4 against RTA Audio's 3.5. Audio Spectrum Analyzer Pro also leads on update cadence (every 7 months vs every 28 months) and ratings volume (239 vs 32). On price, review sentiment, ads and in-app purchases 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

Both are free to download. RTA Audio sells 1 one-off in-app purchase and Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Audio Spectrum Analyzer Pro holds the better App Store score, 4.4 against 3.5. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 239 ratings behind it against 32, so its average is the more settled of the two. Written reviews complicate that: 59% of RTA Audio's written reviews are positive against 57% of Audio Spectrum Analyzer Pro's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

RTA Audio ships an update every 28 months, Audio Spectrum Analyzer Pro every 7 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
RTA Audio versus Audio Spectrum Analyzer Pro: the parameters behind the verdict, then further details
ParameterRTA AudioAudio Spectrum Analyzer Pro
PriceFreeFree
Rating3.5 (32 ratings)4.4 (239 ratings) — better
Positive reviews58.5% of reviews — better57.4% of reviews
Number of ratings32239 — better
Update frequencyEvery 28 monthsEvery 7 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size2 MB40 MB
Age rating4+4+
DeveloperNew Ball s.r.o.Vlad Polyanskiy

Customer experience

RTA Audio

All ratings31 ratings
Positive64.5%
Neutral3.2%
Negative32.3%
Written reviews41 reviews
Positive58.5%
Neutral9.8%
Negative31.7%

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

RTA Audio

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

1 purchases

RTA Audio

One-time1
  • Upgrade to full version$14.99
2 purchases

Audio Spectrum Analyzer Pro

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

Questions

Is RTA Audio free?
RTA Audio is free to download, with in-app purchases available.
Is Audio Spectrum Analyzer Pro free?
Audio Spectrum Analyzer Pro is free to download, with in-app purchases available.
Which has better reviews, RTA Audio or Audio Spectrum Analyzer Pro?
Audio Spectrum Analyzer Pro is rated higher. RTA Audio averages 3.5 out of 5 from 32 ratings, while Audio Spectrum Analyzer Pro averages 4.4 from 239 ratings.
Do RTA Audio or Audio Spectrum Analyzer Pro have ads?
Neither RTA Audio nor Audio Spectrum Analyzer Pro shows ads.
Which is updated more often, RTA Audio or Audio Spectrum Analyzer Pro?
RTA Audio ships an update every 28 months, and Audio Spectrum Analyzer Pro every 7 months. Most recently, RTA Audio was updated on October 23, 2026 and Audio Spectrum Analyzer Pro on October 29, 2026.

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