FFT app icon

Apps Like FFT for iPhone and iPad

Analyze audio and display frequency graphs

Analyzes audio using Fast Fourier Transform to display amplitude vs. frequency graphs. Displays detailed spectral analysis in octaves. Supports iOS microphone or external microphones for accurate measurements.

by Andrew Smith★ 4.06 ratingsMusic$10.99Data updated 2026-09-08

FFT screenshots

Ranked alternatives

Showing 21–40 of 1,000 ranked alternatives.

  1. FFTWave app icon

    FFTWave

    Eisaku Nozu

    Analyze sound waves and frequencies

    Displays sound waveforms and spectra using Fourier transform. Identifies frequency characteristics and detects peaks. Supports pinch zoom gestures for detailed analysis. Assists in sound adjustment and howling prevention.

    ★ 4.316 ratingsUtilitiesFreeData updated 2026-09-10
  2. KRK Audio Tools app icon

    KRK Audio Tools

    Gibson Pro Audio Corp.

    Measure frequency in real time

    Measure and display real-time frequency spectrum with Spectrum RTA. Calibrate monitor levels using the Level Meter. Determine optimal EQ presets with EQ Recommendation. Align monitors for accurate sound with Monitor Align.

    ★ 4.140 ratingsMusicFreeData updated 2026-09-17
  3. Audio Kit app icon

    Audio Kit

    Sinusoid Pty Ltd

    Audio analysis and signal generation tools.

    The app provides a real time Spectrum Analyser, a Scope to display waveforms, an SPL Meter, and a Signal Generator. Users can view audio spectrums, waveforms, sound pressure levels, and generate sine waves or noise.

    ★ 3.56 ratingsMusic$2.99Data updated 2026-10-01
  1. Spectrum Analyzer RTA app icon

    Spectrum Analyzer RTA

    ONYX 3

    Real-time audio analysis for sound.

    The app provides real-time audio analysis for musicians and recording engineers. It offers octave band analysis, FFT plots, and a spectrograph for sound visualization and measurement.

    ★ 4.367 ratingsMusic$19.99Data updated 2026-09-25
  2. Sound Spectrum Analysis app icon

    Sound Spectrum Analysis

    Dmitriy Kharutskiy

    Analyze waves in real time

    Analyze spectra in real time using a microphone. Display waveforms and FFT data with adjustable frequency scales. Measure noise levels for approximate readings. Adjust FFT size for varying frequency accuracy.

    ★ 3.642 ratingsUtilitiesFreeData updated 2026-09-15
  3. SoundScope VR app icon

    SoundScope VR

    Andrew Smith

    Analyze sound with real-time video.

    The app provides detailed audio analysis with multiple graph types and smoothing options. Users can overlay analysis data onto a real-time view and save recordings of sound levels and physical events.

    ★ 3.98 ratingsMusic$24.99Data updated 2026-10-07
  4. Water Eject ‒ Speaker Cleaner app icon

    Water Eject ‒ Speaker Cleaner

    TINY BOOM LIMITED

    Generate sound waves and customize audio frequencies

    Create and visualize sound waves with frequency control from 0Hz to 22,000Hz. Measure decibels to assess noise levels. Emit ultrasonic frequencies to deter insects. Toggle between light and dark interface themes.

    ★ 4.730,885 ratingsMusicFreeData updated 2026-10-14
  5. Speedometer Speed Box Trip Log app icon

    Speedometer Speed Box Trip Log

    Hans Schneider

    Track , distance, and direction

    Track , distance, and direction with a digital and analog . Set custom distance values. Switch between portrait and landscape modes. Display in MPH, KM/H, and KNOTS. View altitude, maximum , and average with the Pro Pack.

    ★ 4.537,676 ratingsNavigationFreeData updated 2026-09-08
  6. Clear Wave - Water Eject App app icon

    Clear Wave - Water Eject App

    European apps solutions LTD

    Generate tones and track noise

    Generate tones between 50 Hz and 30,000 Hz for testing or tuning. Track environmental noise levels and detect harmful sound pressure. from phone speakers using sound waves to restore sound clarity.

    ★ 4.62,083 ratingsMusicFreeData updated 2026-09-06
  7. Decibel Meter - dB app icon

    Decibel Meter - dB

    Devnex B.V.

    Measure sound levels and display graphs

    Measure sound levels with a decibel meter that displays current, maximum, and average values. View values on a gauge and in a graph. Set and track sound level measurements. Share results directly. No in- purchases required.

    ★ 4.6717 ratingsUtilitiesFreeData updated 2026-09-27
  8. Decibel Metre (Sound Meter) app icon

    Decibel Metre (Sound Meter)

    Unicom TOV

    Measure sound levels with meter

    Measure sound levels using the built-in microphone. Display decibels in dBA with a digital readout. Show minimum, average, and maximum values. Visualize sound levels with a graph line.

    ★ 4.5575 ratingsUtilitiesFreeData updated 2026-09-06
  9. iAnalyzer app icon

    iAnalyzer

    平 陈

    Analyze audio signals with FFT.

    The app analyzes audio signals using FFT. It displays results in FFT spectrum, Octave, and 1/3 Octave formats with colored curves based on dB values.

    ★ 4.275 ratingsMusicFreeData updated 2026-09-12
  10. Speaker Wizard Tone Generator app icon

    Speaker Wizard Tone Generator

    HyperHype UAB

    Generate tones, test audio, customize frequencies

    Generate pure tones, frequencies, and waveforms for and headphone testing. Customize frequency ranges and noise types. Perform audio quality tests and analyze sound output. Save and share test results.

    ★ 4.67,330 ratingsMusicFreeData updated 2026-09-06
  11. Sound Meter (Decibel) app icon

    Sound Meter (Decibel)

    Unicom TOV

    Measure noise, display decibels, show reference

    Measures environmental noise and displays decibel values in real time. Shows current noise reference and min/avg/max dB levels. Displays dB as a gauge and graph line. Saves measured records for later review.

    ★ 4.62,587 ratingsUtilitiesFreeData updated 2026-09-06
  12. Water Ejectº app icon

    Water Ejectº

    Semen Sharyhin

    Udio tones at specific frequencies

    Udio tones with adjustable frequency, amplitude, and waveform selection. Choose from sine, square, sawtooth, and triangle waveforms. Test audio equipment, tune instruments, or use for sound therapy. Control settings through an intuitive interface.

    ★ 4.884 ratingsMusicFreeData updated 2026-09-06
  13. Tone Generator EX app icon

    Tone Generator EX

    An-Che Lee

    Generate tones with precise frequency

    Udio tones with customizable frequency settings from 15Hz to 22KHz. Choose between sine, square, sawtooth, and triangle waveforms. Create and save custom presets. Control playback from notification drawer, lock screen, or headset buttons.

    ★ 4.8522 ratingsUtilitiesFreeData updated 2026-09-18
  14. Audio Spectrum Analyzer Pro app icon

    Audio Spectrum Analyzer Pro

    Vlad Polyanskiy

    Analyze and display FFT plots

    Analyze in real time with octave band and FFT plots. Display sound levels in decibels and noise ratings. Choose linear or logarithmic scales. Adjust window functions and track maximum values.

    ★ 4.4238 ratingsMusicFreeData updated 2026-09-11

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.