By Andrew Smith

  • Category: Music
  • Release Date: 2009-09-08
  • Current Version: 10.19
  • Adult Rating: 4+
  • File Size: 189.84 MB
  • Developer: Andrew Smith
  • Compatibility: Requires iOS 9.0 or later.
Score: 4.5
From 2,221 Ratings


AudioTools 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. Also shows FFT and Schroeder curve. * 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



  • By far the best.

    By TxMedic3338
    I’ve been using this suite of tools for five years. The app Always works, always does what I need and it is FAR less expensive than many other options. When I visit client sites it is so nice to grab samples and save as photos for later inclusion in reports. I do wish that there was a way — but I understand I can’t do it easily — to use a calibrated external microphone. However, at this price point that’s a big request. I highly recommend this group of apps for any user skills from beginner curiosity up to experienced audio engineers.
  • Awesome

    By Oldwoodak
  • Well worth it! Always updating.

    By GT500&Raptor
    I just wanted to give my quick review..... features and functions and capabilities of the app are top notch. I don’t think there is anything that even comes close.... at least not that i have ever saw. My favorite thing is how often the app is updated and new modes, features, tests, and constant refinement happens. It obvious they care about the app and strive to be the best.... to me that means a lot!
  • Excellent features, accuracy, and support.

    By Tfabris
    So far, I have only made use of the LARSA tool in this suite, but the attention to detail is very high, so I get the impression that everything in this suite of tools is just as good. The author, Andrew Smith, was also very responsive and helpful in email when I asked some usage questions. The LARSA tool is amazing. My goal was to find out if my car stereo had any need for EQ correction because I thought I could hear an unnatural peak at 1.5k. So I was able to pair my iPhone with the car stereo so that the LARSA app played a frequency sweep through the car speakers, while the app simultaneously listened to the resulting sweep with its internal mic, and then graphed it. Sure enough, there was the proof: a hump at 1.5k in the graph, about 8db’s worth. I could then easily make a parametric EQ correction of the exact amount, and now it sounds much better. I was able to do all this immediately without any special configuration, it just worked out of the box. The author has posted about how the app turns off some of the built in filtering and limiting on the iPhone’s internal mic so that it gets an accurate response. For adjusting my car stereo, this was enough for my needs, but it’s great to know that I could also attach a calibrated microphone and get and even more accurate result. The app lets you run multiple tests (up to 8 of them I think) and compare them or average them together. I used this to get multiple samples from different listening positions in the car. It also lets you save and recall multiple test runs, adjust for latency, and other things. Very feature-complete. Final note: the LARSA tool is among the “in-app-purchases”, so you will need to buy it separately, though it has a 7-day trial built in. I think you can also buy it “a la carte”, or with other bundles, in the App Store.
  • Please support audiobus

    By Tipler Machine
    I want to use a parametric eq to tune some monitors to flat, but this is not possible to verify in LARSA because Audiotools won't let me run it through the same EQ. The easiest way to do this would be to add audiobus support to Audiotools/LARSA. Then the signal sweep can get corrected by the same EQ I apply to other apps.
  • Some calculations are wrong.

    By Frankdog51
    I REALKY WANTED THIS APP TO WORK TO SAVE ME TIME ANALYZING ROOM DESIGN. I CAN’T TRUST IT!! In room mode calc - for an example - this calculator is not consistent with most university calculators I can find through the series of frequencies you need to have to design room dimensions. Kind of difficult for me to put trust in this. As in most coding that’s heavy in multiple simple mathematical computations it is quite easy to make mistakes. I have bought a few of the sections from this company because some of them are handy and fast but I don’t trust ANY of the computations in this app because of the errors I have found. Ho to a good acoustical engineering college site - the european colleges are the best but you will have to convert to meters a lot but this is something that you can learn to do quickly with google calculator, even if you are a math dunce. It is probably going to be difficult for most people to analyze all these numbers in a full mathematical stat output but if you take your time you will - I hope - see the patterns. Just methodically look for numbers being close together. Acoustics are for math wizards, I guess, but it is a damned shame these people don’t really understand math and/or are sloppy coders. Is this app just another “money maker” for a sloppy coder?? There are far more sloppy coders than math wizard coders out there. Oh well, back to the spreadsheets. This IS ok for on-the-run pocket calculations but don’t trust it.
  • I Use this great App Daily

    By ClaudeHill2
    As an Audio Professional, I use this App everyday in my work. I have have been at it fo 50 years. This App for about 5 years!
  • Thumbs Up

    By Deference
    30 plus years as a professional sound engineer, well versed in SMAART and TEF analysts. This is a very useful “On the Fly” APP!
  • Can’t Calibrate Mic

    By MyKart
    I can’t get to step 1 with Audio Tools. The setup will not import my mic’s calibration txt file and the app keeps hasseling me to review it so 0 stars would be preferable but 1 is as close as I can get to that rating. It’s just a sales platform not a useful app as-is. You have to buy the add-ons to get actual useful data from it.
  • Misleading money-grab

    By Bordesh
    Really wanted to like this app. I read about all these different tools it supports in the description, and decided to pull the trigger on the most expensive app purchase of my life. Twenty dollars. Turns out that this only gets you a couple of simple "tools", most of which are available for free through other apps. The kicker is that the useful tools can cost anywhere between 5 and TWO HUNDRED DOLLARS. Who do these guys think they are? It's absolutely insane. Not even those videogames with endless "microtransactions" are this much of a shameless money steal. When you pay twenty dollars for an app, it had better be good. It shouldn't just be a portal to dropping another absurd amount of money for basic functionality you would expect.