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 Harmonizer 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 Harmonizer 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.

Ratings and Reviews

2.6 out of 5
5 Ratings

5 Ratings

KeviNator Gamer ,


I requested a refund, but Apple said it didn’t meet the condition, and I felt unsatisfied with the apps compatibility on my Vocals.

Developer Response ,

Please contact me via Facebook (4Pockets Audio) and explain your problem. Maybe you are not using it as intended or you are using in an un-tested DAW. Either way I am happy to talk you through any issues.

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!!!

Ben Efitofadoubt ,

Sounds great!

I have only had this for a short time, but I am blown away. It tracks beautifully.
Another great app from a first rate developer.


Limelight Software
11.7 MB

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



Age Rating
Rated 4+
Copyright © 2019 -


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