Best apps like SimpleFFT

10+ similar apps compared and reviewed

4.4 avg rating
10 free apps
Updated October 2026

Looking for something like SimpleFFT? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to SimpleFFT

Audio SA#1

Audio SA by Yasuyoshi Ota

spectrum analyzer
Editor's Choice
🔧 Utilities
0.0(0 ratings)
FreeAdsIn-App Purchases
Audio SA screenshot 1
Audio SA screenshot 2
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Audio SA screenshot 6

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.

SignalScope X#3

SignalScope X by Faber Acoustical, LLC

Dynamic Signal Analysis Tools
Worth Considering
🔧 Utilities
3.0😞(23 ratings)
FreeIn-App Purchases
SignalScope X screenshot 1
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This app provides powerful measurement and analysis tools for acoustics, audio, and electronics. It offers a free oscilloscope and subscription-based tool sets for basic, advanced, and professional needs, compatible across iPhone, iPad, and Mac.

What We Love

  • 👍 Powerful software
  • 👍 Good for professional testing
  • 👍 Captures faint hums
  • 👍 Works well for waveforms
  • 👍 Useful for guitar debugging
  • 👍 Great for live sound monitoring
  • 👍 Works on multiple devices
  • 👍 Good for teaching/demonstrations

Room to Improve

  • 💸 Expensive subscription model
  • 💸 High one-time purchase cost
  • 💸 Perceived as a rip-off
  • 💸 Previous purchases invalidated
  • 💸 Lack of upgrade path
  • 💸 Subscription required for basic functions
  • 💸 Overpriced compared to alternatives
  • 💸 Clunky user interface
  • 💸 Inaccurate SPL meter
  • 💸 Takes over file types
  • 💸 Limited free version

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4
Sound Spectrum Analysis
Sound Spectrum Analysis
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Audio Frequency Analyzer (RTA)
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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.

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

Real-time spectrogram visualizationConstant-Q, linear, and mel frequency scalesFull human hearing frequency range
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HAA CinemaTools with HAA Link
HAA CinemaTools with HAA Link
HAA CinemaTools with HAA Link
Home Cinema Audio Analysis
Free

This app provides professional-grade sound analysis and calibration tools for home cinema systems. It offers real-time analysis, SPL metering, and speaker polarity testing, with advanced modules for detailed system performance evaluation and automated correction filter generation.

Real-time RTAPrecision SPL meterSpeaker polarity tester
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Frequency Analyzer
Frequency Analyzer
Frequency Analyzer
Sound Decibel Meter, Spectroid
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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
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Decibel : dB sound level meter
Decibel : dB sound level meter
Decibel : dB sound level meter
Audio noise Spectrum Analyzer
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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.

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Frequency: Sound Generator
Frequency: Sound Generator
Frequency: Sound Generator
by Lucija Jaksic
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Generate various sound waves, including sine, square, sawtooth, and triangle, with adjustable frequencies from 1Hz to 22000Hz. Visually observe animated sound waves and control volume. Useful for testing hearing, speakers, instruments, and even cleaning water from speakers.

Generate sine, square, sawtooth, triangle wavesAdjustable frequency (1Hz-22000Hz)Animated sound wave visualization
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Decibel Meter Ultra
Decibel Meter Ultra
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Measure Sound and Noise Levels
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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.

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