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 AudioUtil by Sound-Base Audio is a Mobile Audio App and a Standalone Application. It functions as a Standalone Application.
AudioUtil AudioUtil AudioUtil AudioUtil
Product AudioUtil
Developer Sound-Base Audio
Price (MSRP)
Type / Tags Audio Analysis ToolFFTOscilloscopePeak MeterRMS MeterSpectrogramSpectrum Analyser
Plug-in, App & Soundware Format(s)
UtilityStand-alone utility / application
Operating System Availability
Download Released
Downloads Released
System Requirements
Android 4.2 (Jelly Bean) or greater
Miscellaneous Information
Copy ProtectionNone

AudioUtil Spectrum Analyzer captures audio signals and analyzes them right on your phone in real-time. Screenshots of the display can easily be taken through the utility's context menu. Freeze the display by touching the screen, and drag to show a value readout. Adjust multiple parameters for each utility, like frame size, zero padding, window type, range, and themes to name a few. This app can be used with a 3.5mm 4-pole (TRRS) external microphone (non-USB), if supported by phone.

Try the free version: https://play.google.com/store/apps/details?id=org.sbaudio.audiotoolsfree

Utilities included in this app:


  • View sound waves in the time domain.
  • Adjustable frame size.
  • Amplitude measurement by dragging on the screen.

Decibel Meter:

  • Max-peak or RMS amplitude readings in dBFS.
  • View as a solid bar or multi-step graph.
  • Peak tracking with variable time falloff.

FFT Graph:

  • Linear and logged frequency axis.
  • Six window types.
  • Peak tracking with frequency and amplitude readout.
  • Rendering filter for high-accuracy readings on stable signals.


  • Definable frequency limits to zoom in on desired frequencies.
  • Adjustable zoom/scroll speed.
  • Four themes/color maps.

Frequency Spectrum:

  • View a FFT analysis as a color spectrum.
  • Linear and logged frequency axis.
  • Four themes/color maps.

This app requests minimal permissions to record audio and to write to storage. These are required in order to successfully capture sound and save screenshots to the device.

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