What's New

-Updated for latest iOS devices and new iOS versions
-Bug fixes and stability improvements

App Description

A Real Time Analyzer for the iPhone, iPad and iPod Touch. Test your speakers, tune your room, do acoustical analysis work or just have a better understanding of audio frequencies. RTA is a professional-grade acoustical analysis tool. All filters meet or exceed ANSI and IEC Class 1 specifications.

Includes Octave and 1/3 Octave modes, with selectable decay times, as well as Peak Hold and true linear Average mode.

*** iOS Microphones

We have analyzied every iOS device, including all of the iPads, all iPhones, and iPod touches, and have created microphone compensation files that are applied automatically. You can trust the results you are getting, often within just a few dB of a far more expensive analyzer. Calibration is updated regularly, automatically, from our cloud-based calibration database.

Upgrade to our iTestMic or iAudioInterface2 to bring your system up to full professional specs.

*** Save and Recall Graphs

You can save and recall graphs, marked with the GPS location, date & time, and your comment, as well as store the image to your photo roll.

Export the data as an XLS formatted file to your computer for inclusion in reports or further analysis.

*** Max and Min Bars

You can also turn on resettable Max/Min bars (see image #4) to capture peaks. Double-tap to reset the bars.

*** Specifications and Devices

The internal iPhone mic has a noise floor near 30 dB, and if your are running iOS 6, clips around 120 dB.

*** Touch GUI

Fully interactive touch GUI features includes scroll up/down, pinch to zoom or compress the vertical dB scale, or swipe horizontally to get a cursor that reads out the exact dB level and frequency across the screen. To make the cursor disappear, swipe it off the graph to the left.

The landscape-mode display flips 180 degrees so that you can face the internal mic in either direction.

*** Overlay Curves

Also included are optional noise curve overlays, in NCB, RC, PNC, NC, X-Curve and NR mode. See picture #2 for an example. Use this feature to get a quick reading on the noise levels in a room. Also includes the cinema large-room X-curve overlay.

*** Calibration

RTA can be fully calibrated, whether you are using it with the internal iOS microphone, or one of our professional test & measurement mic solutions. And, if you are using iTestMic, the mic calibration is transmitted directly to the app, so you are always calibrated.

*** RTA or FFT?

If you are wondering if you should download this app or our FFT app, check out our website, we have a page devoted to this topic.

See our other acoustics and audio apps, including AudioTools.

iPhone Screenshots

(click to enlarge)

RTA screenshot 1 RTA screenshot 2 RTA screenshot 3 RTA screenshot 4 RTA screenshot 5

iPad Screenshots

(click to enlarge)

RTA screenshot 6 RTA screenshot 7 RTA screenshot 8 RTA screenshot 9 RTA screenshot 10

App Changes

  • October 09, 2011 New version 5.0
  • October 20, 2011 New version 5.1
  • October 17, 2012 New version 6.0
  • November 02, 2012 New version 6.1
  • November 02, 2012 Price decrease: $10.99 -> $9.99
  • November 18, 2012 New version 6.2
  • February 07, 2013 New version 6.3
  • May 09, 2013 New version 6.4
  • June 11, 2013 New version 6.5
  • August 23, 2013 New version 6.6
  • August 27, 2013 New version 6.7
  • September 14, 2013 New version 6.8
  • October 23, 2013 New version 6.9
  • November 14, 2013 New version 7.0
  • November 29, 2013 Price decrease: $9.99 -> $6.99
  • December 03, 2013 Price increase: $6.99 -> $9.99
  • February 19, 2014 New version 7.1
  • March 26, 2014 New version 7.2
  • June 19, 2014 New version 7.3
  • October 02, 2014 New version 7.4
  • October 14, 2014 New version 7.4.1
  • November 06, 2014 Price decrease: $9.99 -> $5.99
  • November 22, 2014 Price increase: $5.99 -> $9.99
  • November 27, 2014 Price decrease: $9.99 -> $4.99
  • December 14, 2014 Price increase: $4.99 -> $9.99
  • January 27, 2015 New version 7.5
  • January 27, 2015 Price decrease: $9.99 -> $4.99
  • May 06, 2015 New version 7.6
  • November 24, 2015 New version 7.7
  • December 05, 2015 New version 7.8
  • February 14, 2016 New version 7.9
  • June 22, 2016 New version 8.1
  • July 11, 2016 New version 8.2
  • November 06, 2016 New version 8.3
  • November 21, 2016 New version 8.4
  • November 25, 2016 Price decrease: $4.99 -> $1.99
  • December 03, 2016 Price increase: $1.99 -> $4.99
  • June 13, 2019 New version 9.2
  • August 16, 2019 New version 9.3
  • September 29, 2019 New version 9.4
  • October 15, 2019 New version 9.6
  • October 22, 2020 New version 10.1
  • August 05, 2021 New version 10.5
  • October 05, 2021 New version 11.0
  • September 15, 2023 New version 11.2
  • October 20, 2023 New version 11.3