Oscillator is a simple and rough audio generator application which has the following functions. You can use it as a test tone and play it as a strange musical instrument.

- Four waveforms. (i.e. sine wave, square wave, saw wave and white noise.)
- Exponential Frequency control using the slider.
- Frequency numeric input using the software keyboard.
- Equal distance panning control using the slider.
- dB style amplitude control using the slider.
- Sound output on/off button.
- All sliders and buttons are multi-touch controlled.

Please note the limitations below before you purchase/use this application.

- The frequency control is not effective with the white noise oscillator.
- The panning control is not effective with an iPhone internal speaker because it is monophonic. Use headphones or stereo speakers.
- The audio output might be interrupted on a keyboard input, a view change and so on.
- The accuracy of the audio output is not very high but it is reasonable.

What’s New

Version 2.0.0

This app has been updated by Apple to use the latest Apple signing certificate.

- iOS 9 compatible
- New randomize function

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

Brutascacher ,

Works great.

Always been a great app. Works flawlessly for me.

Shea the Man ,

Simple but useful

You have 3 waveforms and noise. Frequency, pan, and volume are the parameters. The slider range for frequency can be changed to virtually anything. I set a one octave range between 300hz and 600hz so I could have higher sensitivity. I later changed the max to 6000hz and the iPhone played it fine.

One trick I learned is changing waveforms quickly and repeatedly to get a nice trigger effect.

Even though it doesn't have cutoff, you can manipulate it physically by partially and completely covering the speaker on the iPhone.

matrix_glitch ,

Great to use with an equalizer

A great app to smooth out the frequency response of your sound system when used with an SPL meter and an equalizer. Also useful to help set your crossover points. A very good tuning tool for a buck. I looked at the sine signal on a scope; very little distortion, but some high frequency noise was detected. This noise probably originated from the probe cable or the ipod itself. This low noise was inaudible to me.

App Privacy

The developer, Masayuki Akamatsu, 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

    With Family Sharing set up, up to six family members can use this app.

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