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.
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.
- 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
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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
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.
- 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
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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
Verdict
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
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.
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.
Audio Spectrum Analyzer dB RTA ships an update every 5 months, Audio / Spectrum Analyzer every 2 weeks. Both last shipped on November 3, 2026.
| Parameter | Audio Spectrum Analyzer dB RTA | Audio / Spectrum Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (3K ratings) | 4.6 (1.1K ratings) — better |
| Positive reviews | 43.6% of reviews | 78.3% of reviews — better |
| Number of ratings | 3K — better | 1.1K |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Marina Polyanskaya | Loop-Sessions.LLC. |
Customer experience
Audio Spectrum Analyzer dB RTA
Audio / Spectrum Analyzer
User reviews
Audio Spectrum Analyzer dB RTA
From 3K App Store ratingsWhat 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 ratingsWhat 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
Audio Spectrum Analyzer dB RTA
- Premium Access3 Days trial$1.991 Month
- Spectrum Analyzer Pro$7.99
Audio / Spectrum Analyzer
- Pro (Remove ads, High-Res analysis)$11.99
Questions
Is Audio Spectrum Analyzer dB RTA free?
Is Audio / Spectrum Analyzer free?
Which has better reviews, Audio Spectrum Analyzer dB RTA or Audio / Spectrum Analyzer?
Do Audio Spectrum Analyzer dB RTA or Audio / Spectrum Analyzer have ads?
Which is updated more often, Audio Spectrum Analyzer dB RTA or Audio / Spectrum Analyzer?
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