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

IAP Bought

Yiyu Zhou

Midi Support

The Possibilities!!


I just downloaded this and hooked it up to my EMS Synthi and its pretty amazing indeed…it works! Intermodulated LFO CV voltages from the headphone output of my iPad into the CV inputs of the Synthi modulating all sorts of things. The touch pads allow you to control the rate and depth as well. Would welcome a "Hold" function on the pads so it remembers the positions last selected but that could come later. Really great if you have any analog gear that accepts CV inputs. Well done!

Amazing app

Alexander Rindisbacher

Brute LFO is fantastic and has been incorporated into no shortage of live sets. Elegant simple design and immaculate functionality. Highly recommend.


Justus Kandzi
5.1 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2013 Justus Kandzi
In-App Purchases
  1. Midi Support Free


  • Family Sharing

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

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