Harmonizer with 2 pitch shifted voices + the dry signal. Audio Unit AUv3 effect

Harmonizer is real time audio pitch shifter effect that can mix harmonies into the original signal or run as realtime pitch shifter. The app works as an Audio Unit plugin and can also be used as stand alone real time effect via the device microphone or using iRig or similar device. The pitch shifting does NOT affect timing so the tempo stays the same.

- 2 harmony voices
- smooth pitch shift controls - half tones and cents
- dry volume (original voice)
- efx 1 volume (pitch shifted voice 1 volume)
- efx 2 volume (pitch shifted voice 2 volume)
- reverb (master reverb)
- EFX on/off button (in stand alone mode)

If you play acoustic instrument you can use headphones without a mic and put the phone close to your instrument so the app will work as realtime effect. Now you can play and sing with harmonies.

What’s New

Version 1.70

iPhone 11 UI fixes and iPad crash fix

Ratings and Reviews

3.0 out of 5
7 Ratings

7 Ratings

huzzam ,

Terrible pitch tracking

The shifted intervals are not at all correct. I dialed in a -5.0 semitone shift (down a perfect 4th), and it was giving me some kind of weird 6th below. Not useful for musical applications, maybe fun as a weird effect. Would like a refund.

DanRad64 ,


It adds too much noise to the mix to be useful. If the noise could be cleaned up, it might be a worthwhile unit.

Joe Salyers ,

Another great Audio Unit

Another Great unique effect. Perfect is boring and this Audio Unit effect is definitely NOT the same old boring pitch shifter. Great job!

App Privacy

The developer, Aleksandar Mlazev, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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