About RTA Pro
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...
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 weightings 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.
Version History Improved frequency band calibration, icons moved to top and version and build number is shown in the setting screen. 4.1 12/05/2025 Completely recoded for more precision and added functionality for exporting data. 4.0 12/02/2025 Fixed screen issued on iPhones with smaller screens 3.1 09/02/2019 Supports iPhones with FaceID 3.0 08/27/2019 Calibration for iPhone 7 and 7 Plus. Also enabled use of measurement microphone i436 through the lightning headphone adapter. 2.3 10/10/2016 Compatible with iPhone SE 2.2 08/05/2016 fixed wrong frequency display when sending eMail for Octave resolution. 2.1 04/17/2016 Calibration for iPhone 6S and iPhone 6S Plus 2.0 10/15/2015 bugfix for screen capture 1.9 01/20/2015 Chinese Translation 1.8 10/14/2014 - calibration for iOS 8 on iPod 5, iPhone 4S, iPhone 5, iPhone 5S, iPhone 6 & 6+ - fixed broken graphics on iOS 8 1.7 10/07/2014 Calibration for iOS 8 1.6 08/20/2014 - Support for i436 measurement microphone - added linear mode - easier calibration - bugfixes 1.5 04/02/2014 - improved algorithm for time constants: Impulse 35ms, fast 125ms, slow 1s - small bug fixes 1.3 01/03/2014 - improvements for iPhone 4S 1.2 11/27/2013 - fixed crash on iPhone 5S - calibrated for iPhone 5S 1.1 10/17/2013 1.0 09/21/2013
Previous Versions
Here you can find the changelog of RTA Pro since it was posted on our website on 2016-09-23 20:27:37.
The latest version is 4.1 and it was updated on 2026-06-13 14:20:54. See below the changes in each version.
RTA Pro version 4.1
Updated At: 2026-06-13
Changes: Version History Improved frequency band calibration, icons moved to top and version and build number is shown in the setting screen. 4.1 12/05/2025 Completely recoded for more precision and added functionality for exporting data. 4.0 12/02/2025 Fixed screen issued on iPhones with smaller screens 3.1 09/02/2019 Supports iPhones with FaceID 3.0 08/27/2019 Calibration for iPhone 7 and 7 Plus. Also enabled use of measurement microphone i436 through the lightning headphone adapter. 2.3 10/10/2016 Compatible with iPhone SE 2.2 08/05/2016 fixed wrong frequency display when sending eMail for Octave resolution. 2.1 04/17/2016 Calibration for iPhone 6S and iPhone 6S Plus 2.0 10/15/2015 bugfix for screen capture 1.9 01/20/2015 Chinese Translation 1.8 10/14/2014 - calibration for iOS 8 on iPod 5, iPhone 4S, iPhone 5, iPhone 5S, iPhone 6 & 6+
- fixed broken graphics on iOS 8 1.7 10/07/2014 Calibration for iOS 8 1.6 08/20/2014 - Support for i436 measurement microphone
- added linear mode
- easier calibration
- bugfixes 1.5 04/02/2014 - improved algorithm for time constants: Impulse 35ms, fast 125ms, slow 1s
- small bug fixes 1.3 01/03/2014 - improvements for iPhone 4S 1.2 11/27/2013 - fixed crash on iPhone 5S
- calibrated for iPhone 5S 1.1 10/17/2013 1.0 09/21/2013
RTA Pro version 4.1
Updated At: 2025-12-05
Changes: Improved frequency band calibration, icons moved to top and version and build number is shown in the setting screen.
RTA Pro version 3.1
Updated At: 2019-09-02
Changes: Sep 2, 2019 Version 3.1
Fixed screen issued on iPhones with smaller screens
RTA Pro version 2.2
Updated At: 2013-09-21
RTA Pro version 3.1
Updated At: 1970-01-01
Changes: 2 сент. 2019 г. Version 3.1
Fixed screen issued on iPhones with smaller screens
RTA Pro version 3.1
Updated At: 1970-01-01
Changes: 2019年9月2日 Version 3.1
Fixed screen issued on iPhones with smaller screens
RTA Pro version 3.1
Updated At: 1970-01-01
Changes: 2 de sep. de 2019 Version 3.1
Fixed screen issued on iPhones with smaller screens
Disclaimer
Official App Store Link
We do not host RTA Pro on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Apple and passed their terms and conditions to be listed there. We recommend caution when installing it.
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