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The Ugly VSTi Interface

Simple VST Host by reFuse Software
No Longer Available
The Ugly VSTi Interface
The Ugly VSTi Interface by reFuse Software is an Audio Plugin Host for macOS. It can host VST Plugins. It supports ReWire.
Can Host
Synth Application
Copy Protection
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30-Day: 10112; 7-Day: 11937; Yesterday: 12274

Ugly VSTi Interface is a simple host application for VSTi plug-ins. It loads one VSTi at a time, and no effects, but it's intuitive and stable.


  • The Ugly can now be launched by double-clicking a VST file.
  • Now remembers your MIDI input device of choice.
  • Added "hold" button for onscreen keyboard.
  • Now passes aftertouch MIDI data.
  • Added Panic button (kill all hanging MIDI notes).
  • Lots more little improvements.
  • Awesome new ugly colors.

Latest User Reviews

Average user rating of 1.00 from 1 review

The Ugly VSTi Interface
Reviewed By techdawg
December 8th, 2016

I installed Ugly VSTi, chose my MIDI input, chose my audio interface in output options, loaded a VSTi and loaded a patch. When I play my MIDI keyboard the MIDI received indicator lights on and off but I got no sound. I checked and tested my audio interface with AudioMIDI Setup and it's fine. So I'm still looking for a free VST host. Anybody know a VST host that works with OS X Yosemite (10.10.5) ?

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Comments & Discussion for reFuse Software The Ugly VSTi Interface

Discussion: Active
12 December 2016 at 10:01pm

Hi, I am the developer of the Ugly VSTi. Could you clarify if the audio meters (labeled L and R, on the right side of the interface) were showing signal?

Also, which VSTi plug-in were you testing it with?

Please feel free to send a support request about this issue here:


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