AudioTools, dB, Sound & Audio

AudioTools, dB, Sound & Audio

RTA, Acoustics Measurement SPL

5.1K ratings
353 reviews
#34 in paid Music
🔧 Utilities
🎵 Music
$19.99
In-App Purchases

Details

  • Released
  • Updated
  • September 8, 2009
  • September 16, 2026

Features

AudioTools, dB, Sound & Audio video #1 for iPhone
AudioTools, dB, Sound & Audio screenshot #2 for iPhone
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About

This professional audio analysis app offers a comprehensive suite of tools for acoustic measurements, including SPL, RTA, and FFT. It calibrates device microphones for accurate results and allows for the addition of powerful optional modules for advanced analysis.

SPL Meter with A/C weighting
Real Time Analyzer (RTA)
Fast Fourier Transform (FFT) analysis
Speaker Polarity Test
Audio Oscilloscope
Signal Generator
Audio Recorder
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What users say

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+1

What's New in AudioTools, dB, Sound & Audio

18.11

September 16, 2026

AudioTools, #1 audio test and measurement app New in this release: -All Hyperion units now fully unlocked -Calibration support for the latest iPhone models -Removed all advertising and analytics tracking -Fixed the signal generator being silenced during Transfer Function measurements -The internal generator now stays quiet when an external generator is connected -Measurement popups are faster, correctly sized, and no longer clipped -Fixed weighting labels being cut off in SPL Graph and the SPL Dashboard -Fixed alerts and notices that could occasionally fail to appear -Remote SPL subscription handling improvements -Built for the latest iOS -Bug fixes and stability improvements

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Subscription plans

All-In Module Access

Unlock all modules (except third-party apps)

$9.991 Month
7 Days trial
How to cancel AudioTools, dB, Sound & Audio subscription ⁉️
21

In-App Purchases

$9.99

SPL Graph Module

Record a graph of SPL level over time. Optionally also record the audio. Use A or C weighting, or any of 10 octave band filters. Compute LEQ of the graph. Save graph / audio, and later recall the graph, and use the cursor to listen to audio at any time.

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Charts

Top Paid

📈 34+8

Music

This app rose +8 positions in Music chart.

Last updated on September 19, 2026.

User reviews

非常好用

准确度非常高,我用了10年了

Great App!!!

I am the director of a Performing Arts Center and have to deal with audio issues in 3 different performance spaces and varied events from rock bands, orchestras, choirs, musicals and plays. I purchased the App when it first came out and have used the basic tools that came with it with great success. ( Had FOH audio engineers compare the accurracy of the app tools to their own and have come away impressed) I have purchased additional tools as needed which has saved me a lot of money compared to the single tools I would have purchased. To those having issues with cost or deceptive practices, read everything very closely and contact Line 6 if you have questions. Then Determine what tools you need to accomplish the job so you are paying for what you have need for. When I weighed what I would spend purchasing stand alone tools ( even the so called cheaper units) to what I spent with this app; In my book this has been a worthwhile investment!!! I plan to install on my Ipad 2 so I can use tools at the same time.
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Great app - a must for ToDs and Ed.Auds

I find the pro SLM invaluable and ETC gives me a good estimate of RT. A great App & mentioned in the September issue of the national magazine for the British Association of Teachers of the Deaf.

Ferramenta Definitiva

Canivete suíço dos App para o profissional de áudio do século 21, tudo que precisamos está aqui. Mesmo sendo pago, seu custo/ benefício é fantástico!

Come on, please improve this app?

I have had several upgrades to this suite of audio tools for YEARS. And it is still woefully out of date, klunky to use, and skips over ease-of-use features built into the tablet’s operating system.

Installing again after a rebuild of an iPad Pro, I restore purchases, get feedback they have been restored, but when I open up individual apps, they act like they are not upgraded, and features are grayed out that I bought, and the app settings indicate I bought them.
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Response from developer

Hi, so tech support is available at support@studiosixdigital.com and could have answered this right away for you, reviews take much longer to process! Just force-quit and restart the app if the purchases don't refresh and you will be all good!

Developer apps

User experience

🐞

Reported Bugs

3 issues

Crashes on launch

Bug

Inaccurate SPL and frequency measurements

Bug

Compatibility issues with iOS updates

Bug

Requested Features

4 requests

Add manual

Feature

Improve file export and sharing

Feature

Improve user interface

Feature

Add support for external microphones

Feature

FAQ

What does AudioTools do?

AudioTools is a professional-grade application that provides a suite of audio and acoustic analysis tools. It includes features like an SPL meter, Real Time Analyzer (RTA), Fast Fourier Transform (FFT), speaker polarity testing, and more, designed for accurate sound measurements and analysis.

What are the key features included in the app?

The app comes with a comprehensive set of included tools such as an SPL Meter, RTA, FFT analysis, Speaker Polarity Test, Generator, Audio Scope, CLF Viewer, and Recorder. It also offers file transfer of results via Wi-Fi to PC/Mac and various audio calculators.

How much does AudioTools cost?

The base application is free to download and includes a core set of professional tools. Additional powerful modules, such as SoundScope VR, Transfer Function, and ETC, are available for purchase as in-app upgrades to expand its functionality.

What devices is AudioTools compatible with?

The application is designed for iOS devices. The developers test and calibrate the microphone level and frequency response for each iOS device to ensure the best possible results, and can measure up to 120 dB SPL on many devices.

What are some common use cases for AudioTools?

This app is ideal for professionals needing to measure sound pressure levels (SPL), analyze room acoustics with RTA and FFT, test speaker polarity, generate test signals, or record audio. It can also be used with professional audio interfaces for advanced measurements.