Comparison

RTA Audio vs Spectrum Analyzer

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

Spectrum Analyzer

Visualize audio frequencies with real-time analysis. Features include a sound level meter, multichannel harmonic analysis, and adjustable graphical representations. Gain insights into your sound environment with advanced tools.

Highlights
  • Sound level meter
  • Multichannel harmonic analysis
  • Adjustable graphics
  • AI-powered sound source analyzer
  • Real-time analysis
  • FFT analysis
Features
Read full description

Spectrum Analyzer is a pro audio tool with sound level meter, multichannel harmonic analysis and detailed graphical representation. Learn something new about your sound environment with real-time analysis! FEATURES: - sound level meter; - harmonic analyzer; - adjustable graphics; - AI-powered sound source analyzer. SOUND LEVEL METER - precise measurement of sound and noise level - real-time results HARMONIC ANALYZER - multichannel FFT analysis; - adjustable parameters; - graphical representation. ADJUSTABLE GRAPHICS - various graphics and diagram types; - zoom of selected chart areas. This app offers subscriptions. The paid version includes AI noise detection, immersive 3D visualization, and customizable settings. The free version offers dB/Hz measurement, 2D mode, and limited visualization options. Privacy Policy: https://musicbreath.com/privacy Terms Of Use: https://musicbreath.com/tos

Screenshots

RTA Audio4 screens
Spectrum Analyzer3 screens

Verdict

The call

The clearest difference is review sentiment: RTA Audio at 59% against Spectrum Analyzer's 5%. RTA Audio also leads on ads (none vs shown). Spectrum Analyzer's advantage is rating (4.2 vs 3.6) and update cadence (fortnightly vs every 28 months). On price, in-app purchases, monetization model 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

Both are free to download. RTA Audio sells 1 one-off in-app purchase and Spectrum Analyzer sells 13 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Spectrum Analyzer holds the better App Store score, 4.2 against 3.6. That said, the two scores are not equally well evidenced: Spectrum Analyzer has 197 ratings behind it against 31, so its average is the more settled of the two. Written reviews complicate that: 59% of RTA Audio's written reviews are positive against 5% of Spectrum Analyzer'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, Spectrum Analyzer fortnightly. The most recent releases landed on September 28, 2026 and September 26, 2026 respectively.

Scorecard5 real differences · 5 level
RTA Audio versus Spectrum Analyzer: the parameters behind the verdict, then further details
ParameterRTA AudioSpectrum Analyzer
PriceFreeFree
Rating3.6 (31 ratings)4.2 (197 ratings) — better
Positive reviews58.5% of reviews — better5.0% of reviews
Number of ratings31197 — better
Update frequencyEvery 28 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size2 MB132 MB
Age rating4+4+
DeveloperNew Ball s.r.o.Music Breath

Customer experience

RTA Audio

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

Spectrum Analyzer

All ratings197 ratings
Positive77.2%
Neutral6.6%
Negative16.2%
Written reviews241 reviews
Positive5.0%
Neutral5.0%
Negative90.0%

Bugs and requests

RTA Audio

Not enough reviews yet to summarise bugs or requests.

Spectrum Analyzer

Reported bugs

10 issues
  • App becomes unusable after iOS 16 update
  • Crashes immediately on iPhone 5 with iOS 7
  • Cannot exit app on iPhone X without reboot
  • App freezes when changing settings or views
  • Inaccurate frequency readings
Show 5 more
  • Slow and unresponsive performance
  • App hijacks device sound settings
  • Accidental in-app purchases triggered by home button
  • Subscription charges without clear user consent
  • App locks users into year-long subscriptions with no cancellation option

Requested features

7 requests
  • Audio file import functionality
  • Customizable background colors for chroma key compatibility
  • Ability to record audio instead of only analyzing
  • Better documentation and help files
  • Improved sensitivity for detecting soft sounds
Show 2 more
  • Dark mode option
  • Upfront pricing disclosure before download

In-app purchases

1 purchases

RTA Audio

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

Spectrum Analyzer

Subscriptions9
  • Pitch Finder: Audio Visualizer3 Days trial$4.997 Days
  • Pitch Finder: Audio Visualizer3 Days trial$9.991 Month
  • One Month Sale$9.991 Month
Show 6 more
  • 1 Week Subscription3 Days trial$9.997 Days
  • 1 Year Sub. with discount$19.991 Year
  • 1 Month Subscription$19.991 Month
  • 3 Month Subscription$25.993 Months
  • 1 Year Subscription3 Days trial$39.991 Year
  • 2 months subscription3 Days trial$39.992 Months
One-time4
  • No Ads$9.99
  • Additional Settings Controls$15.99
  • Full Pack + No Ads$19.99
Show 1 more
  • Get More$19.99

Questions

Is RTA Audio free?
RTA Audio is free to download, with in-app purchases available.
Is Spectrum Analyzer free?
Spectrum Analyzer is free to download, with in-app purchases available.
Which has better reviews, RTA Audio or Spectrum Analyzer?
Spectrum Analyzer is rated higher. RTA Audio averages 3.6 out of 5 from 31 ratings, while Spectrum Analyzer averages 4.2 from 197 ratings.
Do RTA Audio or Spectrum Analyzer have ads?
Spectrum Analyzer shows ads; RTA Audio does not.
Which is updated more often, RTA Audio or Spectrum Analyzer?
RTA Audio ships an update every 28 months, and Spectrum Analyzer fortnightly. Most recently, RTA Audio was updated on September 28, 2026 and Spectrum Analyzer on September 26, 2026.

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