iPhone Screenshots


Modulate your analog gear by sending control voltages through the headphone jack.

Signals are in the range of +- 0.5V.

The Brute LFO is a powerful low frequency oscillator module that modulates your analog gear in many different ways.

It consists of three separate LFOs. LFO 1 and 2 can be combined to create unique waveforms. LFO 3 acts as a frequency modulation for the other two oscillators.
For extra expressivenes you can use the touch pads to control your synth.

The Oscillators can produce signals as low as 0.2Hz and go up to 150Hz.

There is a special "brute mode" that creates wild, out of control waveforms.

Midi support is available.

If you have any questions at all, please send me an e-mail.

You should really watch the video to know what its all about.


What’s New

Version 1.2.4

fixed the iPhone 6s bug

Ratings and Reviews

4.8 out of 5
11 Ratings

11 Ratings

jazzresin ,

Brilliant Brute!

Wow. It should feel this good always. The touch response was lightening quick. Logical GUI to the and hand. There was a level of science to this app which you can feel through your whole body. Let me say it again WOW. The pureness of sound through the iPad pro floored me. Other sound synthesis apps don’t sound as science as the Brute does. Reduction of LFO into rhythms is always a fascinating experience. I look forward to the app developers future tools. I hope you can establish the connectivity of being an audio unit or at least interfacing with garageband. Love it. Can we hook a theremin up?

satchnut ,

Love it!

A lot of fun on my Minibrute 2 and Microbrute (haven’t tested the midi functionality).

Would be nice to have support for breakaway cable for L/R channel individual LFO’s or at least single-channel output to leave the other channel free for another app’s output. I have to use a 2nd device for now—probably forever(?) as this app hasn’t been updated in 3 years.

Anyway, nice job!

MatthewCanovas5 ,

Fantastic LFO! extremely useful utility for your modular equipment

very well thought out and highly functional, I really like how versatile it is. bpm function is great too!

App Privacy

The developer, Justus Kandzi, 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.


Justus Kandzi
5.1 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Midi Support


  • Family Sharing

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

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