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AudioTools, dB, Sound & Audio

AudioTools, dB, Sound & Audio

RTA, Acoustics Measurement SPL

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

Details

  • Released
  • Updated
  • September 8, 2009
  • August 22, 2026

Features

Developer

Andrew Smith
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iphone
ipad
🧾$2.99 - $49.99
In-App Purchase↘︎
📉no. 30
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🔄6+ apps
Alternatives↘︎
❓5 answered
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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
Show original description

What users say

Summarized from real user reviews of AudioTools, dB, Sound & Audio. Based on 5.1K reviews and a 4.8/5 average, it highlights the 5 positives and 5 negatives reviewers mention most about this Music app.

Positive things

  • 👍Useful audio tools
  • 🚀Regularly updated
  • 💡Industry-standard features
  • 👍Accurate measurements
  • 👍Great support

Negative things

  • 🔒Many features locked behind paywall
  • 🐛Buggy iOS port
  • 🔒Expensive in-app purchases
  • 🐛Inconsistent functionality
  • 🐛Microphone issues
See all reviews

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

18.10

August 22, 2026

**AudioTools, #1 audio test and measurement app New in this release: -Increased GPS coordinate resolution in output TXT files to 6 decimal places -Fixed GPS location not being saved with measurements -Saved measurement files are now available in the Files app -Upgraded SPL Remote Logging for Environmental Noise reporting -SPL Traffic Light and Dual Traffic Light can now stream to the browser viewer, with 1/3 octave data -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

📉 30-4

Music

This app dropped -4 positions in Music chart.

Last updated on August 29, 2026.

User reviews

Most RecentHighest RatedLowest Rated

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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thumpr23thumpr23

Review

They are the best. It’s pretty hard to say anything else. This is from the hyperdimensional investigator to the general public.
Hyper Dimensional investigatorHyper Dimensional investigator

Awesome tool!

The base module is useful. And, the in-app purchases are reasonable. Armed now with the StudioSix iTestMic2, I can do a lot!
Jules LauveJules Lauve

Excelente

Tudo em um só lugar
TontonrontontonTontonrontonton

Incrível

Muito bom app faz tudo que promete
LascavoLascavo
See 344 more reviews

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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.