RTA Pro 4+

Matthias Schorer

Designed for iPhone

    • 4.0 • 1 Rating
    • $4.99

iPhone Screenshots


RTA Pro is a real time audio spektrum analyzer. It turns your iOS device into a powerful audio test system usually seen only in audio research laboratories and music studios. Such instruments are used to analyze the frequency spectrum of ambient noise, e.g. to be able to pinpoint frequencies which cause rumble in a room. Another use is the level setting setting of PA systems for concerts.

Features: RTA Pro requires iOS11 or later and has been calibrated for the microphones of most iPhones. Custom calibration is also possible. The frequency range is 32Hz to 16kHz. Linear display, as well as correction for measuring dB(A) and dB(C) is provided. Apart from 1/3 Octave Bands and Octave Bands, RTA Pro also features the display of a Fast Fourier Transform (FFT). The speed is adjustable to impulse, 128ms and 1 second. The feature list is rounded up by a noise generator with white and pink noise. It is possible to share measurement results via eMail.

What’s New

Version 3.1

Fixed screen issued on iPhones with smaller screens

Ratings and Reviews

4.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, Matthias Schorer, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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