What's New

AudioTools, #1 Audio Test & Measurement Platform
** New in this update
-Fixed Generator output distortion

App Description

AudioTools from Studio Six Digital is a suite of professional-grade audio and acoustic analysis apps. Included in the price of this app is a great collection of professional tools -- SPL, RTA, FFT, Speaker Polarity Test, Generator, Audio Scope, CLF Viewer, and Recorder, and the framework to add more powerful modules as you need them.

Customize AudioTools for your needs by buying any of the additional optional modules, like Smaart Tools I, SPL Graph, or Impulse Response, at any time right from your iOS device.

We test every iOS device and calibrate the microphone level and frequency response for the best results. We have the ability to turn off the Apple low frequency filters, and on many devices we can measure up to 120 dB SPL.

Add iTestMic, iPrecisionMic, or iAudioInterface2 for a complete professional audio and acoustic test and measurement platform.

Actual reviews:

“...AudioTools is a “how did I ever live without it” app”.

“I think this application is the best I EVER purchased.”

“I have used many thousands of dollars of complicated test equipment that doesn’t measure up to this app suite.”

***** Included in the app price *****

* SPL Meter
A faithful reproduction of a classic analog SPL meter. Includes A and C weighting, and Fast and Slow ANSI decay modes. All filters meet or exceed ANSI type 1.

* RTA
A 1/3 and octave band Real Time Analyzer. Includes touch-GUI range control, a cursor, max/min bars, and noise curve overlays.

* FFT
Detailed acoustic analysis, up to 32876 points. View full detail or smooth to 1/24, 1/6, 1/3 or octave. Includes cursor, scalable graphics, and peak tracking.

* Polarity
Speaker polarity checker. Route the test signal to a speaker, and read the polarity of the speaker on the screen.

* CLF Viewer
Show loudspeaker data, including plots for impedance, axial response, sensitivity, polar response, and 6dB coverage, and a 3D color balloon plot.

* Delay Finder
Measures the time it takes for a pulse to return from a speaker.

* Generator
Generates sine waves, square waves, white and pink noise.

* Line Level Tests
A line level measurement function and frequency counter.

* Audio Scope
A dual-channel audio oscilloscope that includes auto-triggering, variable gain and sweep rate, and storage of scope images.

* Recorder
A mono/stereo audio recorder with WAV and compressed formats and 8k-48k sample rate. Transfer files via WIFI.

* File transfer of results via wifi to PC / Mac.

* Audio Calculators

***** Optional modules available for purchase from within AudioTools *****

* Smaart® Tools - Single channel module.
The power of Smaart® on a mobile platform. Includes RTA graphs to 1/48th octave and Spectrograph. Split-screen on iPad.

* Transfer Function -- Requires 2-channel interface.
Two-channel FFT-based measurement. Allows you to analyze sound system performance with music or pink noise as the signal source.

* ETC
Energy Time Curve. Plot decay of an impulse over time, and compute RT60 time. Internal or External trigger.

* Impulse Response
Record and analyze an impulse or sine sweep, compute octave and 1/3 octave ETC, T30, C50, C80, CT, Definition.

* LARSA
Fast and accurate sine-sweep measurement of loudspeakers and rooms.

* SPL Pro
Digital SPL meter with ANSI Slow, Fast, Peak, and Impulse mode, along with LEQ. Includes A and C weighting, and all 10 octave band filters.

* SPL Graph
Plot second-by-second SPL level for up to 24 hours, and optionally record the audio. Also, add the optional Octave Band Logging upgrade to elevate this tool to rival any professional logging SPL Meter.

* SPL Traffic Light
Monitor live sound levels SPL and Leq and see status in a simple green-yellow-red display.

* STIPA Speech Intelligibility
Meets the current NFPA code standards for testing evac systems and schools.

* Speaker Distortion
Measure THD+n of any driver.

* THD+n (requires iAudioInterface)

* Impedance Meter and Plot (requires iAudioInterface)

* Phase Meter

* Amplitude Sweep

iPhone Screenshots

(click to enlarge)

AudioTools - dB, Sound & Audio screenshot 1 AudioTools - dB, Sound & Audio screenshot 2 AudioTools - dB, Sound & Audio screenshot 3 AudioTools - dB, Sound & Audio screenshot 4 AudioTools - dB, Sound & Audio screenshot 5

iPad Screenshots

(click to enlarge)

AudioTools - dB, Sound & Audio screenshot 6 AudioTools - dB, Sound & Audio screenshot 7 AudioTools - dB, Sound & Audio screenshot 8 AudioTools - dB, Sound & Audio screenshot 9 AudioTools - dB, Sound & Audio screenshot 10

App Changes

  • July 19, 2011 New version 3.3
  • August 02, 2011 New version 3.4
  • September 01, 2011 New version 3.5
  • October 13, 2011 New version 3.7
  • October 19, 2011 New version 3.8
  • October 25, 2011 New version 3.9
  • November 18, 2011 New version 4.0
  • November 24, 2011 Price decrease: $19.99 -> $9.99
  • November 30, 2011 Price increase: $9.99 -> $19.99
  • January 27, 2012 Price decrease: $19.99 -> $9.99
  • January 31, 2012 Price increase: $9.99 -> $19.99
  • February 28, 2012 New version 4.1
  • April 28, 2012 New version 4.2
  • June 03, 2012 New version 4.3
  • June 14, 2012 Price decrease: $19.99 -> $9.99
  • June 19, 2012 Price increase: $9.99 -> $19.99
  • July 28, 2012 New version 4.4
  • August 04, 2012 New version 4.5
  • August 10, 2012 New version 4.6
  • September 28, 2012 New version 4.7
  • October 07, 2012 New version 4.8
  • October 27, 2012 Price decrease: $19.99 -> $9.99
  • October 31, 2012 Price increase: $9.99 -> $19.99
  • November 24, 2012 Price decrease: $19.99 -> $9.99
  • November 27, 2012 Price increase: $9.99 -> $19.99
  • December 11, 2012 New version 4.9
  • January 10, 2013 New version 5.0
  • January 17, 2013 New version 5.1
  • February 02, 2013 New version 5.2
  • March 06, 2013 New version 5.3
  • May 31, 2013 New version 5.4
  • June 13, 2013 Price decrease: $19.99 -> $9.99
  • June 15, 2013 New version 5.5
  • June 18, 2013 Price increase: $9.99 -> $19.99
  • June 23, 2013 New version 5.6
  • July 12, 2013 New version 5.7
  • September 08, 2013 New version 5.8
  • September 14, 2013 New version 5.9
  • September 20, 2013 New version 6.0
  • October 23, 2013 New version 6.1
  • November 20, 2013 New version 6.2
  • November 27, 2013 Price decrease: $19.99 -> $9.99
  • December 02, 2013 Price increase: $9.99 -> $19.99
  • December 11, 2013 New version 6.3
  • January 01, 2014 New version 6.4
  • January 09, 2014 Price decrease: $19.99 -> $9.99
  • January 20, 2014 Price increase: $9.99 -> $19.99
  • January 24, 2014 New version 6.5
  • January 28, 2014 Price decrease: $19.99 -> $9.99
  • February 24, 2014 Price increase: $9.99 -> $19.99
  • February 25, 2014 New version 6.6
  • March 10, 2014 Price decrease: $19.99 -> $14.99
  • March 24, 2014 New version 6.7
  • March 24, 2014 Price decrease: $14.99 -> $9.99
  • April 11, 2014 New version 6.8
  • April 15, 2014 Price increase: $9.99 -> $19.99
  • April 22, 2014 Price decrease: $19.99 -> $9.99
  • April 26, 2014 New version 6.9
  • May 10, 2014 New version 7.0
  • May 23, 2014 New version 7.1
  • May 27, 2014 Price increase: $9.99 -> $19.99
  • May 30, 2014 Price decrease: $19.99 -> $9.99
  • July 18, 2014 New version 7.2
  • July 22, 2014 Price increase: $9.99 -> $19.99
  • July 25, 2014 New version 7.2.20
  • August 13, 2014 Price decrease: $19.99 -> $9.99
  • August 21, 2014 New version 7.2.34
  • September 18, 2014 Price increase: $9.99 -> $19.99
  • October 05, 2014 New version 7.3
  • October 08, 2014 Price decrease: $19.99 -> $4.99
  • October 16, 2014 Price increase: $4.99 -> $19.99
  • October 27, 2014 New version 7.3.3
  • November 04, 2014 New version 7.3.11
  • December 01, 2014 New version 7.3.12
  • December 01, 2014 Price decrease: $19.99 -> $4.99
  • December 16, 2014 New version 7.3.14
  • December 16, 2014 Price increase: $4.99 -> $19.99
  • December 20, 2014 Price decrease: $19.99 -> $9.99
  • February 03, 2015 New version 7.3.15
  • February 17, 2015 Price increase: $9.99 -> $19.99
  • February 22, 2015 Price decrease: $19.99 -> $9.99
  • March 01, 2015 New version 7.4
  • March 20, 2015 New version 7.5
  • March 24, 2015 Price increase: $9.99 -> $19.99
  • April 15, 2015 Price decrease: $19.99 -> $9.99
  • April 30, 2015 Price increase: $9.99 -> $19.99
  • May 02, 2015 Price decrease: $19.99 -> $9.99
  • May 12, 2015 New version 7.6
  • May 24, 2015 Price increase: $9.99 -> $19.99
  • May 26, 2015 Price decrease: $19.99 -> $9.99
  • June 15, 2015 Price increase: $9.99 -> $19.99
  • June 16, 2015 New version 7.7
  • June 22, 2015 Price decrease: $19.99 -> $4.99
  • July 05, 2015 Price increase: $4.99 -> $9.99
  • July 31, 2015 Price increase: $9.99 -> $19.99
  • September 16, 2015 New version 7.8
  • September 21, 2015 Price decrease: $19.99 -> $9.99
  • October 21, 2015 Price decrease: $9.99 -> $5.99
  • November 05, 2015 Price increase: $5.99 -> $19.99
  • November 23, 2015 New version 7.9
  • November 28, 2015 Price decrease: $19.99 -> $7.99
  • December 02, 2015 New version 8.0
  • December 02, 2015 Price increase: $7.99 -> $19.99
  • January 10, 2016 New version 8.1
  • January 29, 2016 New version 8.2
  • February 01, 2016 New version 8.3
  • February 05, 2016 New version 8.4
  • March 10, 2016 New version 8.5
  • July 09, 2016 New version 9.2
  • July 27, 2016 New version 9.3
  • August 12, 2016 New version 9.4
  • November 08, 2016 New version 9.7
  • November 20, 2016 New version 9.8
  • November 24, 2016 Price decrease: $19.99 -> $8.99
  • December 05, 2016 Price increase: $8.99 -> $19.99
  • June 14, 2019 New version 10.22
  • June 14, 2019 Price decrease: $19.99 -> $9.99
  • June 14, 2019 Price decrease: $19.99 -> $9.99
  • June 15, 2019 Price decrease: $19.99 -> $9.99
  • June 15, 2019 Price decrease: $19.99 -> $9.99
  • June 15, 2019 Price decrease: $19.99 -> $9.99
  • June 16, 2019 Price decrease: $19.99 -> $9.99
  • June 19, 2019 Price increase: $9.99 -> $19.99
  • June 22, 2019 New version 10.23
  • August 17, 2019 New version 11.1
  • September 24, 2019 New version 11.2
  • October 22, 2019 New version 11.3
  • December 03, 2019 New version 11.4
  • December 03, 2019 Price decrease: $19.99 -> $8.99
  • December 10, 2019 Price increase: $8.99 -> $19.99
  • January 07, 2020 New version 11.5
  • January 28, 2020 New version 11.6
  • July 15, 2020 New version 13.1
  • July 15, 2020 Price decrease: $19.99 -> $9.99
  • October 23, 2020 New version 14.0
  • October 23, 2020 Price increase: $9.99 -> $19.99
  • November 12, 2020 New version 14.1
  • September 15, 2023 New version 16.9
  • October 03, 2023 New version 16.10
  • October 20, 2023 New version 17.0
  • November 02, 2023 New version 17.1
  • March 19, 2024 New version 17.4
  • April 25, 2024 New version 17.6