Comparison

Audio Spectrum Analyzer dB RTA vs Audio / Spectrum Analyzer

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

Head to head
About

Audio Spectrum Analyzer dB RTA

Analyze sound frequencies and decibel levels with this advanced tool. Ideal for tuning audio systems, it offers real-time spectrum analysis and sound metering for various applications.

Highlights
  • Octave Band Real-Time Analyzer
  • FFT Plot - Fast Fourier Transform
  • Integrated Sound Level Meter (dB-A)
  • Multispectral Harmonic Analyzer
  • Hold Max and Min Peaks
  • Various Window Functions
Features
Read full description

Spectrum Analyzer is full of fantastic advanced features you won’t find elsewhere easily! This app offers a fast and accurate spectrum analysis suitable for both amateur hi-fi enthusiasts and professional A/V engineers. This incredibly precise, pro level tool is perfect for tuning your home cinema, car stereo, subwoofers, and more. Spectrum analyser gives insight into your sounds and deconstructs the audio spectrum, showing the levels of the various frequencies in your audio signal. The built-in sound meter provides high-quality measurement results when measuring ambient noise levels in a multitude of real-life scenarios. Features include- ● Octave Band Real-Time Analyzer ● FFT Plot - Fast Fourier Transform ● Smooth HD Graphics ● Multispectral Harmonic Analyzer ● Integrated Sound Level Meter (dB-A weighted) FFT Features ● FFT size from 256 to incredible 16384 ● Hold Max and (unique feature) Min peaks ● Linear and Logarithm scales ● Various window functions: Rectangle, Hanning, Hamming, Tukey, Cosine, Lanczos, Blackman ● Max frequency live tracking ● Selected frequency live tracking ● Fullscreen mode Octave RTA features ● Bars and unique spline plot modes ● Full, 1/3, 1/6 octave modes ● Hold max mode ● Selected bar tracking. And much more... Please feel free to contact us with any questions, problems or ideas via e-mail support@lspapps.com. Privacy Policy - https://www.iubenda.com/privacy-policy/42622625 Terms of Use https://www.iubenda.com/terms-and-conditions/42622625

About

Audio / Spectrum Analyzer

Analyze audio signals in real-time with waveform, amplitude spectrum, and spectrogram displays. Offers detailed customization for FFT size, window functions, and frequency weighting. Includes tools for generating basic waveforms and measurement signals.

Highlights
  • Simultaneous Waveform, Spectrum, Spectrogram display
  • Customizable FFT size and window functions
  • Frequency weighting (Flat, dBA, dBC)
  • Octave analysis
  • Basic waveform and measurement signal generation
  • Peak hold and spectrum tilt
Read full description

This RTA app supports simultaneous display of "Audio Waveform", as well as the FFT-based "Amplitude Spectrum" (frequency magnitude) and "Spectrogram" (frequency distribution over time), for audio signals input from a microphone. (FFT: Fast Fourier Transform, RTA: Real Time Analyzer) [Features] - Supports simultaneous display of Waveform / Spectrum / Spectrogram - Supports orientation both portrait and landscape - FFT size - Window function - Time Averaging (FFT Frames) - Spectrum Tilt - Frequency weighting (Flat, dBA, dBC) - The type of expressing the frequency of Spectrum / Spectrogram (Linear, Log) - Displays the peak level and its frequency of the spectrum - Peak Hold (displays the results of holding past peak values ​​of the spectrum) - Octave Analysis (displays the spectrum divided into octave bands) - Generates Basic Waveforms (Sine, Triangle, Squire, Saw) - Generates Measurement Signals (Noise, Sweep, TSP) - Pitch meter display The Pro version offers Ad-Free Viewing and High-Resolution Analysis (FFT size: 16384, 32768, Spectrum Average: 4, 8). [Setting items] 1. Screen structure : Select the display screen configuration. View Num : 1, 2 View Type : - 1 screen : Wave (Waveform) / 1D (Spectrum) / 2D (Spectrogram) - 2 screens : W+1D / W+2D / 1D+2D Layout : Vertical / Horizon 2. Frequency Axis Scale Type : Selectable the type of expressing the X direction (frequency) of Spectrum / Spectrogram. - Linear: Distributed at equal intervals - Log: The intervals increase logarithmically 3-1. FFT size : 1024, 2048, 4096, 8192, 16384, 32768 (* 16384, 32768 is available in the Pro version.) 3-2. Window function : Hanning, Hamming, Blackman, No window 4. Time Averaging (FFT Frames) : Number of spectrum average for a display of spectrum. 1, 2, 4, 8 (init value: 1) (* 4 and 8 are available in the Pro version.) Higher value will make the spectrum less noisy and more smooth, at the cost of lower time resolution. 5. Spectrum Tilt : Compensates the visual slope of the spectrum around a 1 kHz pivot. -6.0 to +6.0 dB/oct in 0.5 dB/oct steps (0 means no tilt). 6. Frequency Weighting : Selectable frequency weighting. - Flat: No frequency weighting is applied. - dB(A): Frequency response that takes into account human hearing. - dB(C): Relatively flat response. 7. Peak Hold : Displays the results of holding the past maximum values ​​(peak values) of the spectrum. 8. Octave Analysis : Displays the results of classifying the spectrum into octave bands. Division method: - FFT: Spectral display - 1/24, 1/12, 1/6, 1/3, 1 octave: Display divided into octave bands Calc method: - Max: Displays the maximum spectrum value in each band - Average: Displays the average spectrum value in each band 9. Basic Waveforms : - There are 4 types of waveform. (Sine, Triangle, Squire, Saw) - It can set the value of the frequency in 20Hz - 20000Hz. 10. Measurement Signals : - There are multiple types of noise. (White noise, Pink noise, MLS, Sweep, TSP) [Other] - Background color: Black, White - WaveForm: Line Color (Green, Yellow, Invert), Line Width (1.0 ~ 6.0 px) - Spectrum: Bar color (Green, Yellow, Color patterns) - Spectrogram: Colormap, Display range (-150 ~ -60 dB), Display time (4 ~ 60 sec), Apply Spectrum Tilt - Bluetooth connection policy selection (disabled, HFP, A2DP). - Scaling of Waveform / Spectrum display in the Y direction (magnification: 0.5 - 2.0). - Scaling of Spectrum / Spectrogram display in the X direction (magnification: 1.0 - 16.0).

Screenshots

Audio Spectrum Analyzer dB RTA3 screens
Audio / Spectrum Analyzer4 screens

Verdict

The call

The clearest difference is ads: Audio Spectrum Analyzer dB RTA at none against Audio / Spectrum Analyzer's shown. Audio Spectrum Analyzer dB RTA also leads on iOS requirement (15 vs 17.0). Audio / Spectrum Analyzer's advantage is review sentiment (78% vs 44%) and update cadence (every 2 weeks vs every 5 months). On price, rating, ratings volume 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. Audio Spectrum Analyzer dB RTA sells 2 in-app purchases, starting at $1.99 per month and Audio / Spectrum Analyzer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Audio Spectrum Analyzer dB RTA against 4.6 for Audio / Spectrum Analyzer. Both are backed by a comparable volume of ratings — 3K and 1.1K respectively. Written reviews are what separate them: 44% of Audio Spectrum Analyzer dB RTA's written reviews are positive against 78% of Audio / Spectrum Analyzer's.

UpkeepUpdate frequency

Audio Spectrum Analyzer dB RTA ships an update every 5 months, Audio / Spectrum Analyzer every 2 weeks. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
Audio Spectrum Analyzer dB RTA versus Audio / Spectrum Analyzer: the parameters behind the verdict, then further details
ParameterAudio Spectrum Analyzer dB RTAAudio / Spectrum Analyzer
PriceFreeFree
Rating4.5 (3K ratings)4.6 (1.1K ratings) — better
Positive reviews43.6% of reviews78.3% of reviews — better
Number of ratings3K — better1.1K
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better17.0
Further details — not scored
Size24 MB5 MB
Age rating4+4+
DeveloperMarina PolyanskayaLoop-Sessions.LLC.

Customer experience

Audio Spectrum Analyzer dB RTA

All ratings3,042 ratings
Positive87.7%
Neutral4.1%
Negative8.2%
Written reviews484 reviews
Positive43.6%
Neutral7.4%
Negative49.0%

Audio / Spectrum Analyzer

All ratings1,107 ratings
Positive91.0%
Neutral3.9%
Negative5.1%
Written reviews106 reviews
Positive78.3%
Neutral2.8%
Negative18.9%

User reviews

Audio Spectrum Analyzer dB RTA

From 3K App Store ratings

What we love

  • 🚀 Excellent audio analysis tool
  • 👍 Clean and intuitive interface
  • 💡 Customizable frequency range
  • 🔍 Accurate real-time spectrum visualization

Room to improve

  • 🐛 Compatibility issues with newer iOS versions
  • 🔁 Constant prompts to upgrade to Pro version
  • 🔌 High battery consumption
  • 📊 Inaccurate frequency tracking in some modes

Audio / Spectrum Analyzer

From 1.1K App Store ratings

What we love

  • 👍 Customizable features
  • ⚙️ Accurate measurements
  • 🚀 Helpful for troubleshooting
  • 💡 Useful for ghost hunting

Room to improve

  • 🐛 Crashes and freezes
  • 🔋 High battery and CPU usage
  • 🚫 Inappropriate ads/content
  • 🔒 Security concerns with payment info

Bugs and requests

Audio Spectrum Analyzer dB RTA

Reported bugs

3 issues
  • Freezing and crashing on certain devices
  • Incorrect frequency readings in Octave RTA mode
  • Inability to switch between microphone sources

Requested features

4 requests
  • External microphone support
  • Ability to save and compare measurement results
  • More detailed instructions and tutorials
  • Vertical orientation option

Audio / Spectrum Analyzer

Reported bugs

3 issues
  • Stuck on latest measurement
  • White noise instead of expected functionality
  • Disconnects AirPods

Requested features

4 requests
  • Sampling rate adjustment
  • Wave shape tracking
  • Audio file analysis
  • Octave analysis

In-app purchases

2 purchases

Audio Spectrum Analyzer dB RTA

Subscriptions1
  • Premium Access3 Days trial$1.991 Month
One-time1
  • Spectrum Analyzer Pro$7.99
1 purchases

Audio / Spectrum Analyzer

One-time1
  • Pro (Remove ads, High-Res analysis)$11.99

Questions

Is Audio Spectrum Analyzer dB RTA free?
Audio Spectrum Analyzer dB RTA is free to download, with in-app purchases available.
Is Audio / Spectrum Analyzer free?
Audio / Spectrum Analyzer is free to download, with in-app purchases available.
Which has better reviews, Audio Spectrum Analyzer dB RTA or Audio / Spectrum Analyzer?
Audio / Spectrum Analyzer is rated higher. Audio Spectrum Analyzer dB RTA averages 4.5 out of 5 from 3K ratings, while Audio / Spectrum Analyzer averages 4.6 from 1.1K ratings.
Do Audio Spectrum Analyzer dB RTA or Audio / Spectrum Analyzer have ads?
Audio / Spectrum Analyzer shows ads; Audio Spectrum Analyzer dB RTA does not.
Which is updated more often, Audio Spectrum Analyzer dB RTA or Audio / Spectrum Analyzer?
Audio Spectrum Analyzer dB RTA ships an update every 5 months, and Audio / Spectrum Analyzer every 2 weeks. Most recently, Audio Spectrum Analyzer dB RTA was updated on November 3, 2026 and Audio / Spectrum Analyzer on November 3, 2026.

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