Best Spectrum Analyzer Apps

223+ iOS apps curated and reviewed

4.3 avg rating
18 free apps
Updated May 2026

With an average user rating of 4.3★, the spectrum analyzer category is one of the App Store's strongest. Browse all 223+ apps we track, sorted so the most loved ones surface first.

Top Picks for Spectrum Analyzer

Audio / Spectrum Analyzer#1

Audio / Spectrum Analyzer by Loop-Sessions.LLC.

RTA (FFT / Octave Analysis)
Editor's Choice
🎵 Music
4.9😐(72 ratings)
$10.99AdsIn-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 app is a versatile Audio/Spectrum Analyzer that allows users to view and analyze audio waveforms and amplitude spectrums from microphone input. It offers customization options for display settings, FFT size, window functions, waveform generation, and noise signal generation. Additionally, it supports Bluetooth connection policies and offers an option to hide advertisements through an in-app purchase. For a more advanced multi-channel audio signal experience, users can try out the "Multi Wave Oscillator" linked within the app's settings.

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
Decibel X:dB Sound Level Meter#2

Decibel X:dB Sound Level Meter by SkyPaw Co., Limited

Frequency Spectrum Analyzer
Strong Contender
🔧 Utilities
4.7😐(156K ratings)
FreeIn-App Purchases
Decibel X:dB Sound Level Meter screenshot 1
Decibel X:dB Sound Level Meter screenshot 2
Decibel X:dB Sound Level Meter screenshot 3
Decibel X:dB Sound Level Meter screenshot 4
Decibel X:dB Sound Level Meter screenshot 5
Decibel X:dB Sound Level Meter screenshot 6

Transform your iOS device into a professional sound level meter with pre-calibrated accuracy and various frequency spectrum analysis tools. Measure sound pressure levels, export data to Health app, and enjoy features like FFT graphs, dosimeter readings, and InstaDecibel for social sharing. Experience the convenience of tracking noise levels with precision and ease.

What We Love

  • ⭐ Excellent app
  • 👍 Easy to use and understand
  • 🔍 Useful for various applications
  • 🎓 Helpful for hearing protection

Room to Improve

  • 💰 Expensive subscription model
  • 🔒 Misleading free trial
  • 📢 Intrusive ads

More Spectrum Analyzer apps to explore

4
Audio Spectrum Analyzer dB RTA
Audio Spectrum Analyzer dB RTA
Audio Spectrum Analyzer dB RTA
Sound frequency, decibel meter
Free

An advanced audio analysis app with features like real-time spectrum analysis, sound meter, and FFT plot for tuning home cinema, car stereo, and more. Experience precise frequency breakdowns and harmonic analysis with smooth HD graphics. Contact support for questions or feedback.

🎵 Music
(3K)
5
Audio Spectrum Analyzer Pro
Audio Spectrum Analyzer Pro
Audio Spectrum Analyzer Pro
Sound Frequency Analysis
Free

This app is a powerful real-time audio analysis tool with features like FFT plot, octave band real-time analyzer, and various measurement functions. It offers precise measurements using device-integrated microphones, AirPods support, and external microphone compatibility. Explore more features and functionalities by checking out the app!

🎵 Music
(236)
6
SpectrumView
SpectrumView
SpectrumView
by Oxford Wave Research Ltd.
Free

Visualize frequencies in real-time with SpectrumView, an audio companion for iOS devices. Measure tones, analyze sounds, record audio, and access various tools for detailed frequency analysis, all in one app. Explore SpectrumView today for a new level of audio visualization and manipulation.

📚 Education
(70)
7
Spectrum Lab - Audio Analyzer
Spectrum Lab - Audio Analyzer
Spectrum Lab - Audio Analyzer
Frequency Spectrum Analyzer
Free
🎵 Music
(0)
8
Spectrum Analyzer: Spectrogram
Spectrum Analyzer: Spectrogram
Spectrum Analyzer: Spectrogram
Audio frequency visualizer
Free

Experience real-time sound analysis with a professional Spectrum Analyzer app that includes a sound level meter, multichannel harmonic analysis, adjustable graphics, and an AI-powered sound source analyzer. Enhance your understanding of your sound environment with detailed graphical representations and precise measurements. Check it out now!

🎵 Music
(188)
9
Decibel : dB sound level meter
Decibel : dB sound level meter
Decibel : dB sound level meter
Audio noise Spectrum Analyzer
Free

An advanced sound level meter app with a built-in Spectrum Analyzer for precise measurements. Monitor noise levels, save measurements, export data, and protect your hearing using various features. Download now for accurate sound monitoring and protection.

🔧 Utilities
(36K)
10
Oscilyzer
Oscilyzer
Oscilyzer
Audio analyzer and generator
Free

This audio analysis and generation tool combines an oscilloscope, spectrum analyzer, and synthesizer, allowing users to visualize and manipulate audio signals in real-time. With various operating modes and settings, users can analyze and generate audio frequencies, and even transfer dominant frequencies between modes to create and customize sounds.

📊 Productivity
(8)
11
Suspicious Device Cam Detector
Suspicious Device Cam Detector
Suspicious Device Cam Detector
WiFi & Bluetooth Bug Detection
Free

Detect unauthorized devices in unfamiliar environments with powerful scanning tools that analyze Wi-Fi and Bluetooth connections. Stay informed, alert, and in control with features like infrared camera filters and real-time network diagnostics.

🔧 Utilities
(24)
12
Frequency Analyzer
Frequency Analyzer
Frequency Analyzer
Audio Spectrum, Spectroid, dB
Free

Transform your device into a professional-grade audio analysis suite with industry-leading processing, precision calibration tools, and comprehensive visualization capabilities. Download now and unlock the full spectrum of acoustic measurement capabilities for applications such as acoustic measurement, audio engineering, environmental noise consulting, and more.

🔧 Utilities
(97)
13
Sound Spectrum Analysis
Sound Spectrum Analysis
Sound Spectrum Analysis
Audio Frequency Analyzer (RTA)
Free

This application analyzes sound spectra in real-time using a microphone, offering features such as FFT, linear and logarithmic scales, and various window functions. It can be used to measure noise levels, detect peak frequencies, and export data, making it a useful tool for sound analysis and measurement.

🔧 Utilities
(41)
14
Spectrum Analyzer RTA
Spectrum Analyzer RTA
Spectrum Analyzer RTA
Sound Frequency Analyzer
$19.99
🎵 Music
(67)
15
N-Signal / FFT Sound Analyzer
N-Signal / FFT Sound Analyzer
N-Signal / FFT Sound Analyzer
Audio Spectrum Analyzer
Free
🔧 Utilities
(0)
16
TB Spectrogram
TB Spectrogram
TB Spectrogram
Spectrum visualisation plug-in
Free
🎵 Music
(45)
17
Detector Device: Find Analyzer
Detector Device: Find Analyzer
Detector Device: Find Analyzer
Network WiFi Scanner Signal
Free

Scan your environment with our app to identify possible hidden threats to your privacy and stay safe. Take control of your digital surroundings by accessing advanced features with our premium subscription.

🔧 Utilities
(87)
18
Spectre Analyzer for Logic Pro
Spectre Analyzer for Logic Pro
Spectre Analyzer for Logic Pro
Auv3 Plugin for iOS and macOS
Free

This audio plugin visualizes your audio in real-time using high-resolution FFT technology, providing a precise rendering of audio frequencies. Compatible with various host apps, it leverages GPU rendering to minimize CPU usage, allowing for seamless audio processing.

🎵 Music
(3)
19
Decibel Meter X
Decibel Meter X
Decibel Meter X
Audio spectrum analyzer
Free

This sound measurement and spectrum analysis tool allows users to easily measure decibel levels, decompose sound into frequency components, and generate specific frequency sounds for various applications. With its intuitive interface and detailed instructions, it's suitable for both beginners and professionals, enabling them to explore and understand sound in-depth.

🔧 Utilities
(18)
20
Mic Spectrum Analyzer
Mic Spectrum Analyzer
Mic Spectrum Analyzer
by Adrian Ross
Free

This music visualization tool lets you visualize sound from your phone's microphone in various shapes and effects, with customizable sensitivity and UI themes. Explore a range of presets, load your own photos, and experiment with different effects to create a unique experience.

🎵 Music
(18)

Related searches