This is an AUv3 compatible effect plugin which is intended for use inside your favourite DAW such as Cubasis, Auria, Meteor, AUM or GarageBand etc.

The Vocal Soloist plugin was specifically designed for adding harmonies and basic auto tuning frunctionality to recorded vocal lines. It is specifically tuned to the frequency range of the human voice and tracks the incoming vocal frequency attempting to tune to the desired musical key and mode of your song.

This effect works in real-time and is able to track a monophonic input creating a convincing harmony at either a specified number of semitones or a key/scale offset. The auto tune allows you to snap to the nearest semitone in chromatic mode, or scale note when a key / mode is selected.

We have also included our very popular vocal doubler and reverb to give added presence and thickness to your vocal lines.

The effect includes MIDI control over pitch. If your DAW (such as AUM) supports sending key on/off information to the effect you can directly control the pitch of the harmony. For those DAW's that do not support this you are able to route MIDI from one instance of Vocal Soloist to another instance listening on the same bus.

The effect also includes controls for defining your own scales as well as controlling vibrato.


○ Real-time processing.
○ Allows fixed 3rd, 5th, 7th harmonies etc.
○ Basic Auto-tune (snap to nearest note).
○ Specify a musical key and mode.
○ Ability to snap harmonies to selected key.
○ Built in Vocal Doubler.
○ Built in Reverb Effect.
○ MIDI control for harmony note.
○ Built in MIDI routing.

Note: You can now load this plugin using the internal name 'SoloistFX' or 'HarmonizerFX'.

What’s New

Version 1.06

Fixed an issue which caused the 'A' note to become active after restoring some custom scales.

Ratings and Reviews

3.2 out of 5
23 Ratings

23 Ratings

77JAMES J77 ,

Pretty good!

Only issues are that the wet/dry knob is labeled as wet/dry but is actually reverse (dry to the left, wet to the right or “dry/wet”) I didn’t think it was working at first. Also they misspelled Ionian as Iodian on the list of scales. Minor thing. Very smooth and usable!

Ibseein ,

App Works, Even in GarageBand

Love the app. Works great.
To those saying it doesn’t work in GarageBand or Cubasis, you have to load it differently. Rather than the Usual Interapp audio or audio unit extension, it loads more like a native effect or EQ.

So load a mic track, but don’t bother clicking the (in) symbol as you would with other interapp sources. Instead click the Effect slider button next to your track button at the top left. Then go down to Plug-ins and EQ. Click edit. You may have to remove another effect, but in the empty slot click the plus symbol, then you select audio unit extensions, then finally Harmonizer Fx will show up. Once its loaded, be sure to enable it, then simply double click to engage it.

Enjoy. Thanks for the Excellent Vocal Processor!

Glishba ,

This will make you a singer!

A fantastic effects suite: it’ll keep you in tune, give you some harmonies, add some reverb, and double up your singing to make you sound as great as is possible.
Ps: sounds even better with the 4pockets DeEsser to block the noises made from S’s and T’s.
Buy both!!!

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Limelight Software
14.2 MB

Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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