Welcome to 

Studio Six Digital

We are a company that develops great iPhone and iPad apps and accessories for audio professionals.


New! Go Wireless!

AudioTools Wireless is now available! The app functions as a wireless microphone and a remote-controlled generator for AudioTools and other Studio Six Digital apps.  

AudioTools Wireless uses the local WiFi network to send uncompressed digital audio and calibration data to AudioTools running on another iOS device.

Connect iTestMic, iAudioInterface2, or any other audio source to an iOS device running AudioTools Wireless, and connect to that mic over WiFi from another iOS device on the same network. 

Now Available: AudioTools 6.7 is on the App Store, which includes support for AudioTools Wireless. Includes our new Task Scheduler option. Recommended update!

New! Reference Curve option

New! Dropbox Support


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AudioTools is the professional audio test & measurement app that gives you a comprehensive set of tools on your iOS mobile device. Perfect for A/V techs, FOH, recording engineers, acousticians, home theater installers, and anyone who loves pro audio. 

Upgrade AudioTools with iAudioInterface2, or iTestMic, to complete your mobile professional audio test & measurement system.


The professional audio interface for iOS made for AudioTools.

Phantom powered mic input, balanced line input and output, digital audio output, internal battery, and iOS device charging.  NOW SHIPPING!  Order here. 



iTestMic is our newest iOS audio accessory. Plug it into your iPhone, iPod touch, or iPad to get a mobile professional test & measurement system. $229.

Use it for home theater setup, live sound, SPL testing, or sound contracting work. 


Apple supports legacy devices

Older iOS devices, such as iPod 2nd gen and iPhone 3, can only be updated to iOS 4.1. But Apple only lets us build apps for iOS 4.3 and later. This has led to problems finding an installable version of AudioTools. 

Now, Apple has provided a way to solve this. If you try to load the current AudioTools onto one of those devices, you will now have the choice of loading the "last compatible version" of AudioTools. This is 4.6, built in August 2012.

Now Available! For users of Smaart 7 on PC or Mac, iRemote for SmaartŪ 7!

Alesis IO Dock warning: Not compatible with AudioTools.

MicW and IMM6 warning: Do not improve results.

SPL Meter for Android now available. Watch for more Android Apps here.

Wondering if your device is compatible with our products? Check our Compatibility Page.

** NEW: SmaartŪ Tools now available in AudioTools! ***

** Now Available: STI-PA!

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