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AudioTools - dB, Sound & Audio
 This app is designed for both iPhone and iPad
  • Price
    $9.99
  • CategoryMusic
  • First releasedSeptember 8, 2009
  • Versions2 archived
  • Installable2 of 2
  • AvailabilityStill on the App Store
  • SellerAndrew Smith

RequirementsCompatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later.

Customer Ratings

As of November 29, 2021
     
3,514 Ratings

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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 *****

* SoundScope VR - FFT-based audio analyzer with VR. The powerful acoustical analysis module. Includes RTA graphs to 1/48th octave and Spectrograph, and can display VR.

* 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

To install apps directly onto this device, it must be jailbroken with AppSync installed.
1.9
Requires iOS 3.1.3+
Non-Retina
17.2 MB Install Download
2.2
Requires iOS 3.1.3+
Retina (iPhone only)
18.1 MB Install Download

Chart History

Top Paid · Music View chart ›
Peaked at #35 (June 23, 2021) · 16 archived captures · Jun 2021 – Aug 2021
Top Paid · Music · iPad View chart ›
Peaked at #29 (July 2, 2021) · 11 archived captures · Jun 2021 – Sep 2021
Top Grossing · Music · iPad View chart ›
Peaked at #94 (July 2, 2021) · 5 archived captures · Jun 2021 – Aug 2021
Top Grossing · Music View chart ›
Peaked at #89 (June 27, 2021) · 3 archived captures · Jun 2021 – Jul 2021

Ratings Over Time

DateVersionRatingRatingsPrice
November 28, 2015 7.9 — 269 $7.99
December 13, 2017 10.9 ★ 4.8 517 $19.99
November 29, 2021 15.0 ★ 4.8 3,514 $9.99

From archived App Store listing data, captured by the Wayback Machine.

Archived Reviews

8 of 25
Wonderful TOOL!!
     
by AFCCPP · April 11, 2026

I use it often and it does the job for me and even rivals my $5000 analyzer🤔

Klipsch Jubilee stereo and Home Theater setup
     
by Music Matters To Me · March 10, 2026

Amazing tool to tweak your dream setup! 100% love this to see what works and what doesn’t.

Great tool
     
by Rockola54 · June 18, 2026

Thumbs up

Responsive
     
by BlendRecords · February 14, 2026

Andrew responded quickly. My thoughts, put reauthorize in main list of options, not under a second sublist. Seems like this could be simply changed so when you click any paid option it reauthorizes automatically for you and thanks you or asks you to pay/subscribe ;)

Superb!
     
by Rlodad · February 10, 2026

It just works. Easy to learn, accurate, useful data.

The Best Apps for audio
     
by Wynnstan · March 20, 2026

Perfect reliable and always has been my go to.

Pro Audio Must Have App!!
     
by millermixFOH · May 22, 2026

I work as a pro sound mixer and downloaded Audio Tools thinking it would be a cool toy to show off to collegues, but not much more. As it turns out, Audio Tools is a "how did I ever live without it?" app! I have used The RTA with the internal iphone mic to rough tune LOUD monitor wedges and FOH systems and so far have been very happy with the results. The db meter works great as does the tone generator. This app literally replaces $1000's worth of test equipment for the price of a Radio Shack db meter!! If you tour as an artist or band sound mixer and don't already have a SMART, Apogee, Earthworks rig, this app is for you, especially if you work on A different PA everyday! I can't wait to try the interface.

Simply the best
     
by Ricky-gene · June 17, 2026

Super accurate and easy to read modules. Best in the business!

Period reviews recovered from Apple's customer-review feeds via the Wayback Machine.

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