Envelope Shaper

for Mac/Windows ($39,99)  and iPad ($7,99)  

A groundbreaking way of looping effects.

Stay in the loop.

Kuvert defines a whole new way of dealing with effects. In short, Kuvert allows you to draw five different envelopes. These envelopes control different effect parameters, and can be drawn freely or onto a grid. The envelopes are looped, while the incoming audio isn’t (unless you’re feeding it looped material of course). This is a powerful & fun way of altering your sounds to reach a whole new level, sometimes not even recognizable! Thanks to the looping nature of the plug-in, it will fit very well into any musical context. One way of using it would be to revitalize any looped material (such as beats) within just a few seconds.


Make sure that Kuvert receives incoming audio (for example a drum loop), choose one of the parameters that you would like to alter, and start drawing. The parameter will be altered according to the loop length, and there are also some more knobs to set.


Kuvert for Mac/Windows


Buy Kuvert for Mac/Windows
Try the demo!
(Desktop only)

Fully functional, but with occasional audio disruptions.


Kuvert for iPad


Buy Kuvert for iPad



  • Volume envelope
  • Low cut filter envelope (with resonance)
  • High cut filter envelope (with resonance)
  • ”Glitch” envelope (alters timing)
  • Delay send envelope (with tempo synchronized time, filter and feedback


1 2 3 4
  • 1. Envelope area

    This is where you draw your envelopes. The parameters are colour-coded to quickly see what's going on.

  • 2. Grid

    If active, the envelope you draw will snap to the number of slices selected here. Use it to make choppy envelopes.

  • 3. Envelope controls

    Use these to alter the behaviour of the envelopes. For example: Range = the difference between the envelope's min- and max-value.

  • 4. Envelope length

    Used to set the full length of one loop.



PDF version

Demo (Desktop version only)

Fully functional, but occasionally with audio disruption. To unlock the full version, purchase a license and click on the ribbon marked DEMO to enter your serial number. (Yes, this download can be used if you have a license and need to re-install the full version)

Kuvert for Mac v 1.0.0

(Unzip and open the included .pkg file to start the installation)

Kuvert for Windows v 1.0.1

(Unzip and open the included .exe file to start the installation)

High resolution images

Download zip with hi-res images