Audio Unit (AU) Vocal Effect Apps (9)

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Audio Unit (AU) technology enabled Vocal effect app list for iOS

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.

Price $6.99 $9.99
Author 4Pockets.com
Type Effect
Effect type Vocal effects
Supports Audio Unit (AU)
Rating total: 2.9697 (33), current: 2.9697 (33)
Released 06/14/2019
Updated 02/08/2023

QVox is a creative audio effect that transforms vocals, guitars, drums, and synths into four independent voices. Create beautiful harmonies, widen instruments and design groovy rhythmic sequences with diatonic pitch shifting and delay.

Price $14.99
Author Eventide
Type Effect
Effect type Pitch effects, Vocal effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.42856 (14), current: 4.42856 (14)
Released 12/11/2019
Updated 03/06/2024

FabFilter Pro-DS is a professional de-essing plug-in. With its 'Single Vocal' detection algorithm, it attenuates sibilance in vocal recordings.

Price $29.99
Author FabFilter
Type Effect
Effect type Vocal effects
Supports Audio Unit (AU)
Rating total: 4.92307 (13), current: 4.92307 (13)
Released 06/21/2019
Updated 12/20/2023

MicSwap is a Microphone Emulator and Recorder app.

Price Free
Author Future Moments
Type Effect
Effect type Vocal effects, Other
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.49687 (6706), current: 4.49687 (6706)
Released 12/07/2014
Updated 12/04/2023

AudioTune is a new real-time pitch correction AUv3 plugin from Coda Labs and AudioKit. Make vocals and instruments sound more in tune, or add creative robotic tuning effects in real-time with nearly zero latency.

Price $2.99
Author AudioKit Pro
Type Effect
Effect type Pitch effects, Vocal effects
Supports Audio Unit (AU)
Rating total: 3.66667 (93), current: 3.66667 (93)
Released 06/04/2020
Updated 03/10/2021

This is actually a trio of effects all rolled into a single package which are ideally suited but not limited to voice recordings (De-Esser, a Vocal Doubler and a Noise Gate).

Price $9.99
Author 4Pockets.com
Type Effect
Effect type Compressor, Limiter, Gate, Vocal effects
Supports Audio Unit (AU)
Rating total: 3.42105 (19), current: 3.42105 (19)
Released 05/08/2019
Updated 07/21/2023

TalkWorks is an AUv3 plugin designed to give any sound a human vocal like quality by simulating vowel sounds found in human speech.

Price $9.99
Author 4Pockets.com
Type Effect
Effect type Vocal effects
Supports Audio Unit (AU)
Rating total: 4 (5), current: 4 (5)
Released 01/24/2021
Updated 01/28/2021

Formante is a vocal filter plugin. You can simulate the formants and the vowels of a human voice, creating rich and mellow sounds; it can be applied to synthesizes, drums, guitars or any sound you want.

Price $4.99
Author Elliott Garage
Type Effect
Effect type Vocal effects
Supports Audio Unit (AU)
Rating total: 3.33333 (3), current: 3.33333 (3)
Released 08/10/2018
Updated 01/06/2021

This app is realtime voice changer that can work without headphones. When you speak, it will speak together with you making your voice to sound like alien robot.

Price $0.99
Author Aleksandar Mlazev
Type Effect
Effect type Vocal effects, Other
Supports Audio Unit (AU)
Rating total: 2 (4), current: 2 (4)
Released 10/30/2018
Updated 03/05/2023
Did you know?

Audio Units (AU) is an audio plug-in technology built in Apple's macOS and iOS operating systems. Initially developed for desktop operating systems along with VST (Virtual Studio Technology by Steinberg GmbH), it available now for iOS too. AU apps (plug-ins) can modify sound pitch, sample rate and stream over network, produce signal.