Opening the iTunes Store.If iTunes doesn’t open, click the iTunes icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download Fourier by Alex Wiltschko, get iTunes now.

Do you already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC


By Alex Wiltschko

Open iTunes to buy and download apps.


Fourier is an FFT for the iPhone! See the frequencies in sound around you in a gorgeous and snappy iOS 4-optimized app.

SINGLE TAP to see the peak frequency and musical note (you can use it as a tuner!)
DOUBLE TAP to pause the spectrum, to take a screenshot, or for more detailed analysis
TAP AND HOLD to bring up a cursor to inspect individual frequencies

What's New in Version 1.2.3

- Increased resolution
- Better default display regino
- Cursor works properly on retina display


iPhone Screenshot 1
iPhone Screenshot 2
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
View in iTunes
This app is designed for both iPhone and iPad
  • 4,99 €
  • Category: Music
  • Updated:
  • Version: 1.2.3
  • Size: 5.4 MB
  • Languages: English, Basque, Dutch, French, German, Japanese, Korean, Simplified Chinese, Vietnamese
  • Developer:

Compatibility: Requires iOS 5.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.