RTA Pro4.1 - App Store
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Publisher Description
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
About RTA Pro
The company that develops RTA Pro is Matthias Schorer. The latest version released by its developer is 4.1.
To install RTA Pro on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-14 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the RTA Pro as malware if the download link is broken.
How to install RTA Pro on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the RTA Pro is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After RTA Pro is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 4.1
posted on 2026-10-14
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
version 4.1
posted on 2025-12-05
Improved frequency band calibration, icons moved to top and version and build number is shown in the setting screen.
version 3.1
posted on 2019-09-02
Sep 2, 2019 Version 3.1
Fixed screen issued on iPhones with smaller screens
version 2.2
posted on 2013-09-21
version 3.1
posted on 1970-01-01
2 de sep. de 2019 Version 3.1
Fixed screen issued on iPhones with smaller screens
version 3.1
posted on 1970-01-01
2019年9月2日 Version 3.1
Fixed screen issued on iPhones with smaller screens
version 3.1
posted on 1970-01-01
2 сент. 2019 г. 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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