Best Spectral Analysis Apps

4.6😐(1K ratings)

FreeAdsIn-App Purchases

This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.

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

Audio Spectrum Analyzer Pro by Vlad Polyanskiy

Sound Frequency Analysis

Worth Considering

by Oxford Wave Research Ltd.

4.4😐(238 ratings)

FreeIn-App Purchases

Audio Spectrum Analyzer Pro screenshot 1

Audio Spectrum Analyzer Pro screenshot 2

Audio Spectrum Analyzer Pro screenshot 3

Audio Spectrum Analyzer Pro screenshot 4

Audio Spectrum Analyzer Pro screenshot 5

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.

What We Love

👍 Intuitive and easy-to-use interface
💰 Completely free with no ads
🎯 Accurate frequency and spectrum analysis
📊 Multiple visualization modes (FFT, spectrograph, bar display)
🔧 Professional-grade audio measurement tool
🎵 Identifies musical notes and frequencies
⚡ Responsive and real-time analysis
🛠️ Useful for sound engineering and audio setup
📱 Works well on both iPhone and iPad

Room to Improve

💸 Aggressive subscription/paywall nags
🔄 Frequent iOS compatibility issues after updates
📉 Features moved behind paywall in recent updates
🐛 App crashes on startup (especially iOS 16/26)
⚠️ Misleading free trial that requires payment
🔐 Excessive permissions requests (photo access)
🎚️ Limited microphone sensitivity controls
📊 Graph obscured by notch/dynamic island
🔊 Mutes device speaker volume when running
⏱️ Slow performance on some devices

More Spectral Analysis apps to explore

SpectrumView

Real-time spectrogram and spectrum analyzerConfigurable sample rate and frequency resolutionRecord, pause, and playback audio files

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📚 Education

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InterSpec Radiation Analysis

γ and x-ray spectral analysis

Spectral nuclear radiation data analysisNuclide identificationSource activity determination

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Audio spectrum analyzer

Real-time FFT spectrum with dB scalePeak hold and multiple window functionsPinch to zoom and swipe to pan

This application provides real-time audio spectrum analysis with clear, smooth visuals. It offers advanced features like peak hold and multiple window functions, all processed locally on your device without ads or data collection.

Vernier Graphical Analysis

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Data Collection and Analysis

Multi-sensor data collectionVarious data collection modesSimultaneous graph display

This app allows science students to collect, graph, and analyze data from Vernier sensors. It supports various sensor types, offers multiple data collection modes, and provides powerful analysis tools like curve fitting and statistics. Data can be shared and exported for reports and further analysis.

This app analyzes audio waveforms to create visual voiceprints as TFFT images. It offers extensive customization for FFT analysis, including adjustable ranges, sizes, scales, and window functions. A simple waveform generator is also included for learning purposes.

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Audio Spectrum Analyzer dB RTA

Sound frequency, decibel meter

Octave Band Real-Time AnalyzerFFT Plot - Fast Fourier TransformIntegrated Sound Level Meter (dB-A)

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.

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Audio Frequency Analyzer (RTA)

Sound Spectrum Analysis

Real-time sound spectrum analysisFast Fourier Transform (FFT) with adjustable sizeLinear and logarithmic frequency/amplitude scales

Analyze sound spectrums in real-time using your device's microphone. This tool offers detailed frequency and amplitude scales, various window functions, and octave band analysis. It can also function as a noise level meter and allows for data export and saving of measurements.

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Decibel X:dB Sound Level Meter

Frequency Spectrum Analyzer

Precise sound pressure level measurementFrequency spectrum analysis (FFT, BAR graphs)Historical data recording and export

This app transforms your device into a professional sound level meter, precisely measuring ambient noise pressure. It offers advanced features like frequency analysis, historical data management, and dosimeter functions, making it useful for various applications and entertainment.

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Spectral Eye

by Secret Base Design

Spiral frequency spectrum displayFast Fourier transform analysisVisualizes harmonic frequencies

Visualize the harmonic frequencies that make up sounds. This app uses a Fast Fourier transform to display sound components in a unique spiral arrangement, aligning octaves. It's ideal for musicians and sound enthusiasts to understand tonal differences and musical structures.

Decibel : dB sound level meter

Audio noise Spectrum Analyzer

Real-time decibel (dB) sound level monitoringIntegrated Spectrum Analyzer (FFT, spectrogram)Sleep tracking with sound recognition

Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.

Smooth real-time spectrograms

Real-time spectrogram visualizationConstant-Q, linear, and mel frequency scalesFull human hearing frequency range

This app visualizes sound in real-time using various spectrogram types. Explore detailed audio data with intuitive touch controls and adjustable parameters. An optional purchase unlocks advanced measurement tools.

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Real-time spectrum displayMusic scale horizontal axisPitch detection with visual indicator

Audio Spectrum Monitor

by Tadao Yamaoka

$0.99

Visualize audio input in real-time with a music scale display. Adjust the view with drag and pinch gestures, and utilize the built-in tuner and recording features. Analyze pitch and save your audio.

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This app provides real-time audio analysis and visualization for sound frequency and decibel levels. It's designed for precise audio measurement, suitable for both hobbyists and professionals tuning rooms or speakers.

Octave Band Real-Time AnalyzerFFT PlotSmooth HD Graphics

📊 Productivity

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Easy Audio Spectrogram

Visualize sound effortlessly

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This app provides advanced light analysis and efficient workflow features for lighting production. It offers remote control operations, data storage, and detailed light readings including BIN ranking and CRI.

An audio analyzer and logger.