Audio spectrum analyzer EQ Rta 4+

Sound frequency, decibel meter

Marina Polyanskaya

Designed for iPad

    • 4.6 • 242 Ratings
    • $3.99



Spectrum Analyzer is a powerful real-time audio analysis app. Ideal for room tuning or speaker tuning, this app provides precision audio measurement and visualization that fits in your pocket!

Spectrum Analyzer has many advanced features which are normally only found in much more expensive sound analysis software. It offers fast and accurate spectrum analysis suitable for both amateur hi-fi enthusiasts and professional A/V engineers.

Feature Highlights:
● Octave Band Real-Time Analyzer
● FFT Plot
● Smooth HD Graphics
● Multispectral Harmonic Analyzer
● Integrated Sound Level Meter (dB-A weightnings)
● Up to 16384 FFT size
● Various window functions
● Spectrogram mode

Have any questions? Contact us at

What’s New

Version 2.2.1

- Minor bugfixes

Ratings and Reviews

4.6 out of 5
242 Ratings

242 Ratings

CSDinSing ,

Detailed Bass and treble analysis is lacking

Gives almost no information below 70 hertz. I am trying to decide whether I need a sub woofer and how much my speakers roll off below 70hz. It shows a straight response from 70 to zero which is wrong and you can't select a reading below 50. Has the same problem at the upper end of the audible range. Fine for mid range analysis I suppose but this usually not where the problems are in audio systems.

lyka144gghjuyrttr ,

Work perfect

I just downloaded this app because i wanted to identify a mysterious high-pitched tone that was audible in my house. It worked great. The tone was clearly visible as a peak around 6400hz, and then i was able to confirm using a tone generator. I'm just a casual user, but the app present a feature set that would appear to satisfy more serious users too. I recommend this app and works great.

Kerly31415 ,

I am really impressed

I've used bar graph audio analyzers on the iPhone and the one in this app is as good as any I've seen, but the real winning feature is the FFT display. It allows ready identification of the exact frequencies that are the components of the sound you are hearing.

Highly recommended.

App Privacy

The developer, Marina Polyanskaya, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Purchases
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

Lux Light Meter Pro
Audio Spectrum Analyzer dB RTA
Light Meter - lux and foot candle measurement tool
dB Decibel Meter - sound level measurement tool
Octave Band Real Time Frequency Analyzer and Sound Level Meter

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