iFunctionGenerator turns your iPhone, iPad, or iPod Touch into an audio function generator.

You can have up to 20 generators, each operating at a different frequency. Each generator can be one of the following types:
• Sine Wave
• Triangle Wave
• Sawtooth Wave
• Square Wave
• Pink Noise
• White Noise

The volume of the left and right channels can be independently controlled, and may be set using either a slider for ease, or direct entry of the volume, for maximum precision. The relative phase of each channel may also be set.

Frequencies from 1 to 20,000 Hz may be entered. The phase can vary between -360 to 360 degrees. The volume may be between 0 and 100 percent.

The mute button makes it easy to quickly silence the audio generators.

You can take snapshots of the generator settings. This lets you build a library of settings, and quickly load the desired settings.

What’s New

Version 2.5

This app has been updated by Apple to display the Apple Watch app icon.

Updates for iOS 10
64 bit

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

Kenu008 ,

Doesn’t work

I just paid £2.99 for something that doesn’t even work! If you are going to charge, provide a decent app that works!!! Refund please!

chicky UK ,

Pointless as there's no sound output now

Worked one day, stopped working the next. Every other app I have makes intended sounds. This one never seems to. Completely useless.

Talbotwoman ,

No sound output

Info instruction tell you everything you want to know but little of use to use this .
No audible output no matter what settings you apply. Does not live up to its description or title.
A disappointment.

App Privacy

The developer, Black Cat Systems, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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