Best Audio Spectrum Analyzer Pro Apps

211+ iOS apps curated and reviewed

4.5 avg rating
12 free apps
Updated May 2026

Looking for free audio spectrum analyzer pro apps? 12 of our 211+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Audio Spectrum Analyzer Pro

Audio Spectrum Analyzer Pro#1

Audio Spectrum Analyzer Pro by Vlad Polyanskiy

Sound Frequency Analysis
Editor's Choice
🎵 Music
4.4😐(236 ratings)
FreeAdsIn-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)

Room to Improve

  • 💸 Aggressive subscription/paywall nags
  • 🔄 Frequent iOS compatibility issues after updates
  • 📉 Features moved behind paywall in recent updates
Audio Spectrum Analyzer dB RTA#2

Audio Spectrum Analyzer dB RTA by Marina Polyanskaya

Sound frequency, decibel meter
Strong Contender
🎵 Music
4.5😐(3K ratings)
FreeIn-App Purchases
Audio Spectrum Analyzer dB RTA screenshot 1
Audio Spectrum Analyzer dB RTA screenshot 2
Audio Spectrum Analyzer dB RTA screenshot 3

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.

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
Audio / Spectrum Analyzer#3

Audio / Spectrum Analyzer by Loop-Sessions.LLC.

RTA (FFT / Octave Analysis)
Worth Considering
🎵 Music
4.5😐(129 ratings)
FreeAdsIn-App Purchases
Audio / Spectrum Analyzer screenshot 1
Audio / Spectrum Analyzer screenshot 2
Audio / Spectrum Analyzer screenshot 3
Audio / Spectrum Analyzer screenshot 4
Audio / Spectrum Analyzer screenshot 5
Audio / Spectrum Analyzer screenshot 6

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

More Audio Spectrum Analyzer Pro apps to explore

4
Audio Spectrum Analyzer
Audio Spectrum Analyzer
Audio Spectrum Analyzer
by Black Cat Systems
$3.99

Transform your iOS device into a powerful audio spectrum analyzer. Visualize frequencies up to 20 kHz with customizable display options including frequency span, FFT size, and logarithmic views. Enhance analysis with filtering, peak hold, and adjustable decay rates.

Frequency analysis up to 20 kHzAdjustable frequency span and FFT sizeLogarithmic frequency display
🔧 Utilities
(52)
paid
5
AudioTools, dB, Sound & Audio
AudioTools, dB, Sound & Audio
AudioTools, dB, Sound & Audio
RTA, Acoustics Measurement SPL
$19.99

This professional audio analysis app offers a comprehensive suite of tools for acoustic measurements, including SPL, RTA, and FFT. It calibrates device microphones for accurate results and allows for the addition of powerful optional modules for advanced analysis.

SPL Meter with A/C weightingReal Time Analyzer (RTA)Fast Fourier Transform (FFT) analysis
🎵 Music
(5K)
free with in-app purchases
6
Decibel : dB sound level meter
Decibel : dB sound level meter
Decibel : dB sound level meter
Audio noise Spectrum Analyzer
Free

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.

Real-time decibel (dB) sound level monitoringIntegrated Spectrum Analyzer (FFT, spectrogram)Sleep tracking with sound recognition
🔧 Utilities
(36K)
freemium
7
Decibel X:dB Sound Level Meter
Decibel X:dB Sound Level Meter
Decibel X:dB Sound Level Meter
Frequency Spectrum Analyzer
Free

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.

Precise sound pressure level measurementFrequency spectrum analysis (FFT, BAR graphs)Historical data recording and export
🔧 Utilities
(156K)
free with in-app purchases
8
Spectrum Analyzer: Spectrogram
Spectrum Analyzer: Spectrogram
Spectrum Analyzer: Spectrogram
Audio frequency visualizer
Free

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.

Sound level meterMultichannel harmonic analysisAdjustable graphics
🎵 Music
(192)
freemium
9
Audio spectrum analyzer EQ Rta
Audio spectrum analyzer EQ Rta
Audio spectrum analyzer EQ Rta
Sound frequency, decibel meter
$3.99

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
(245)
free
10
AUDIIO - RTA Analyzer
AUDIIO - RTA Analyzer
AUDIIO - RTA Analyzer
Spectrogram, RTA, dB Analyzer
Free

Visualize audio in real-time with various data graphs like RTA Bar, FFT, and Spectrogram. Offers full octave and 1/3 octave analysis with linear or logarithmic scales. Displays peak and current dB data in a sleek, functional interface.

Real-time audio analysisRTA Bar / Line GraphFFT and Spectrogram visualization
🎵 Music
(84)
free with in-app purchases
11
Decibel X PRO: dBA Noise Meter
Decibel X PRO: dBA Noise Meter
Decibel X PRO: dBA Noise Meter
Frequency Spectrum Analyzer
$69.99

This application transforms your device into a professional sound level meter, offering precise dBA and dBC measurements. It features advanced analysis tools like frequency spectrum analysis and data export, making it ideal for audio professionals and anyone interested in sound environments.

Professional sound level meterdBA and dBC measurementsFrequency spectrum analysis (FFT, BAR graphs)
🔧 Utilities
(6.9K)
paid
12
dB Meter & Spectrum Analyzer
dB Meter & Spectrum Analyzer
dB Meter & Spectrum Analyzer
Noise & sound level decibel
$29.99

Measure ambient noise levels with professional-quality accuracy. This app offers a spectrum analyzer, hearing test, and the ability to save and share measurements with location data. It's a powerful, cost-effective tool for personal sound monitoring.

Professional-quality sound level measurementIntegrated spectrum analyzerNoise dosimeter (NIOSH/OSHA)
🔧 Utilities
(858)
free with in-app purchases
13
Spectrum Analyzer RTA
Spectrum Analyzer RTA
Spectrum Analyzer RTA
Sound Frequency Analyzer
$19.99

This real-time audio analysis app provides precision measurement and visualization for sound frequencies. It's designed for musicians and recording engineers, offering tools for room and speaker tuning, and can be used with built-in or external microphones.

Octave Band Real Time AnalyzerFFT PlotSpectrograph module
🎵 Music
(67)
paid
14
Decibel Meter Ultra
Decibel Meter Ultra
Decibel Meter Ultra
Noise Level Frequency Analyzer
Free

Measure, record, and analyze sound levels in your environment. This app offers precision metering, noise elimination tools, hearing protection features, and home audio calibration. It provides detailed reports and can be used with device microphones or external ones.

Precision sound level meteringNoise logging and reportingHearing protection dosimeter
🔧 Utilities
(2.3K)
free with in-app purchases
15
Spectra - Music Visualizer
Spectra - Music Visualizer
Spectra - Music Visualizer
Visualize Audio
$1.99

Experience music visually with real-time audio spectrum analysis. Customize backgrounds, logos, and visualizer elements to create stunning animations. Export your creations in high resolution for sharing.

Real-time 60fps audio visualizationVideo export up to 4k 60fpsCustomizable background images and presets
🎵 Music
(1.4K)
paid
16
Spectrum Lab - Audio Analyzer
Spectrum Lab - Audio Analyzer
Spectrum Lab - Audio Analyzer
Frequency Spectrum Analyzer
Free
🎵 Music
(0)
17
Frequency Analyzer
Frequency Analyzer
Frequency Analyzer
Audio Spectrum, Spectroid, dB
Free

Transform your device into a professional audio analysis tool with advanced FFT analysis, SPL monitoring, and detailed visualizations. Record, analyze, and export audio data with precision calibration and multiple weighting filters.

Real-time FFT analysisCalibrated SPL measurements32-bit float audio recording
🔧 Utilities
(97)
free with in-app purchases
18
Tone Generator: Audio Sound Hz
Tone Generator: Audio Sound Hz
Tone Generator: Audio Sound Hz
Generate Audio Frequency Waves
Free

Create pure sine wave audio tones across a wide frequency range. This tool is ideal for tuning instruments, conducting hearing tests, performing science experiments, and testing audio equipment. Easily adjust frequencies and volume, with support for AirPlay devices.

Generate sine wave tonesFrequency range 20Hz - 22,000HzInstrument tuning
🎵 Music
(2.6K)
ad-supported
19
Spectre Analyzer for Logic Pro
Spectre Analyzer for Logic Pro
Spectre Analyzer for Logic Pro
Auv3 Plugin for iOS and macOS
Free

Visualize your audio in real-time with high-resolution FFT analysis. This Audio Unit plugin is compatible with various host apps and utilizes the GPU for efficient, CPU-light processing.

Real-time audio visualizationHigh-resolution FFT analysisGPU-accelerated rendering
🎵 Music
(3)
free
20
spectrum eye RTA
spectrum eye RTA
spectrum eye RTA
Audio frequency analyzer
$9.99
$11.99 | 17% OFF

This audio analysis tool provides real-time frequency spectrum displays for music professionals and students. It offers adjustable settings for detailed sound monitoring, feedback detection, and acoustic analysis on iOS devices.

Real-time spectrum displayAdjustable FFT sizes and averagingSelectable microphone input
🎵 Music
(6)
paid