Jussi - Vocal Synthesizer 4+

Klevgränd produkter AB

    • 3.5 • 10 Ratings
    • $7.99



This synthesizer emulates male voice vowels in a unique way. Thanks to a set of powerful parameters you can make Jussi sing anything from soft and airy choir-like vowels to hard and angry shouting.
Formants are controlled by playing with different velocity, which makes it fun and easy to play using a MIDI keyboard.


• AUv3, works with AUv3 compatible hosts like Garageband, Cubasis, AUM etc.

• ADSR with ”Turn-in” and ”Turn-out” option (Turn-in and Turn-out affects the pitch and maps it to attack and release)

• Voice character XY pad (Intensity and Narrowness)

• Legato mode (glides between notes and velocity levels)

• Legato Hold mode (polyphonic legato when using a sustain controller, consult the documentation for more info)

• Throat emulation XY pad (Grain and Tonality)

• Built-in reverb

iPhone 6 or later is recommended.
iPad 4 or later is recommended.

Documentation is available at https://klevgrand.se/products/jussi

Feedback or suggestions? Drop us a mail: support(at)klevgrand.se or @klevgrand on Twitter

What’s New

Version 1.2.0

- Updated keyboard
- Midi support
- Export/import presets

Ratings and Reviews

3.5 out of 5
10 Ratings

10 Ratings

Tenente ,

Does what it does

This is a vocal synth. It produces a synthesized voice. There are a few variables to control but this is not subtractive, modular, granular or FM synthesis. It’s a voice w/ some parameters to adjust but it’s still the same voice.
There’s not a way to control the vowels that the voice sings. In fact, it makes a sound that is like all vowels combined or perhaps, absent of any vowel sounds at all. It’s like a voice singing trying to sing “aahhhhhh” but it sounds more like “uyghhhhhhh”.
You can get a lot of weird sounds from it. It definitely sounds like a voice. It’s klevgrand so it’s good.
I think it’s great.
I read the reviews first.
I got exactly what I was expecting and hope this helps someone else to expect exactly what they’re getting.

Zaondo ,

Look up a video

Look up a video so you know what you are buying. I got what I wanted cause they don’t have other voice synth apps like this. Wish they had more voices though or more voice apps. Wish it was cheaper

rhumbaphone ,

Sounds great, but…

Sounds great but doesn’t work with my ewi. Can you guys make this work as well as PIPA does? I actually purchased this synth because Pipa was so fantastic. Please fix

App Privacy

The developer, Klevgränd produkter AB, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

Photo & Video

You Might Also Like