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Audio Tool app for iPhone and iPad


4.8 ( 4528 ratings )
Utilities Music
Developer: Performance Audio
1.99 USD
Current version: 2.0, last update: 7 years ago
First release : 07 Jul 2010
App size: 20.04 Mb

This amazing collection of professional audio tools is a must have for every audio professional, home theater enthusiast, recording engineer, concert goer, and anyone else who needs a fast and easy way to measure the sound levels around them, keep rhythm or tempo, turn their iOS device into a microphone, generate test tones, calculate recording times, or quickly find the definitions of commonly used audio terms.

"At only $1.99, it is possibly the best deal available in the world of pro audio gear… This iPhone essential for engineers, producers and musicians, will justify the price in a single use."
- Russ Long, Pro Audio Review

Audio Tool currently includes these 6 great tools for your everyday audio needs: Decibel Meter Pro, Microphone Pro, Bit Calc Pro and Audio Atlas!

Decibel Meter Pro:
Decibel Meter Pro is the hottest, most feature packed decibel meter on iTunes! With killer graphics optimized for the iPhone, the Retina display and the iPad! Decibel Meter Pro has been in the Top Utilities on iTunes since its release! Download your copy today and find out why!

Tempo Pro:
Tempo Pro turns your iOS device into an amazing metronome! Tempo Pro is so fun to use, you will be creating custom beats, tempos and rhythms for hours! You can have anywhere from 1/4 to 12/8 time, and its so easy and fun to adjust with our custom beats fader! Tempo Pro has vibrate, and camera flash options on supported devices! Start Tempo Pro and put it in your pocket or at the edge of your vision for a great silent metronome!

Microphone Pro:
Microphone Pro turns your iOS device into a microphone with a multi-function on/off button and volume control, making it great for use as a talk-back mic in live and recording applications, karaoke, public address, or anywhere you need an easy-to-use microphone.

Scope Pro:
Scope Pro is an Oscilloscope that lets you see the sounds around you! Scope Pro takes the audio signals from your built-in microphone and draws them to your screen!

Tone Generator Pro:
Tone Generator Pro automagically creates perfect Sine Waves, Square Waves, Triangle Waves, Sawtooth Waves, Reverse Sawtooth Waves, White Noise and Pink Noise!

Bit Calc Pro:
Got a recording session tonight? Got enough drive space?

Find out now! Our fun and quick interface places the information you need most, right at your fingertips. You can set your own defaults, input in any direction, flip your phone upside down, and wow your friends with Bit Calc Pro!

Audio Atlas
What did he just call you? Never look like a fool in the presence of an audio pro again! Our Audio Atlas can supply you with the definitions you need right now. Download Audio Tool and watch your brain grow!

Try Audio Tool, youll love it!

Pros and cons of Audio Tool app for iPhone and iPad

Audio Tool app good for

For either monitoring noise or sound generator, this app works great! Thanks
good design, needs improvements, but worth a buck. The decibel meter does not appear to be accurate, but that would be a problem with the hardware, most likely. I think the tone generator should be able to be more specific - such as typing in the tone of interest, or buttons for precise notes...
Nice little addition from the latest patch and seems to work good. Nicely done! I would also like a noise generator it would be fun to play around with to create bell tones etc.
Amazing! Very useful tools inside. Graphic design is excellent and makes the UI feel beefy and useful.
Unfortunately, it broke after upgrading to iOS 8. Found it very useful. Hopefully there is an update coming soon.
Seems they didnt do too much testing before this release. A few bugs where the generator will keep going when leaving that module, some strange behavior here and there. Ive been force quitting the app when changing the modules. Kinda a pain, but still a cool app. Developers, please take the time and fix a few bugs, would be appreciated.

Some bad moments

Db meter Very inconsistent and not at all close to accurate when used on both iphone4 & ipad2 with built in mics. Looks pretty but not functional.
As per previous reviewer, not accurate. The higher the level the less accurate. Up to 15dB off. Looks cool though!
This version apparently hasnt been tested with iOS 9. Sine wave tone generation doesnt work. The user interface for settings is bizarre. Switching back and forth to the running metronome makes it go crazy. Basically, no longer usable.
Где обещанный Русский язык!!!! Where is the promised Russian language !!!!
Love the interface and design. Great work. Maybe a spectrum analyzer in the future?
Though my iPad 2 (iOS 7) still works my new iPhone 5s has no sound input in this app therefore no dB meter. Too bad, it was very handy to have a meter always in my pocket.