Zen Musical Harmonizer ZMH-1 is a vocal/instrument harmonizer app. ZMH-1 has four different ways to interact with harmony (one at a time):

**Playable Harmonizer--Play different chord buttons (Major, Major 6, Major 7, minor, minor 6, minor 7) to transform your one note into harmony in real time.

**Pseudo-Smart Harmonizer--Reads your monophonic input signal (guitar, voice, etc.) and generates the correct harmony notes based on the chosen key.

**Shifter--Shift your signal with a choice of intervals.

**Octave--Makes your signal sound huge with up-to-five octaves per single note played or sung.

ZMH-1 is ready to be used creatively by you! Use it on guitars, kick drums, vocals, and synths. Give your monophonic synth polyphony! Any source material you think might need thickening or harmony.

It supports:

**Audiobus (Third-Party App)
**Inter-App Audio
**Landscape Orientation
**Pan Knob For Each Channel
**Volume For Each Channel

Have a Zen Harmony experience.

Requires headphones. Use either a microphone or instrument adapter. Audio will stop when screen locks. Go to Settings-->General-->Auto-Lock and choose Never for uninterrupted audio.

What’s New

Version 1.1.0

* Built for iOS 13
* Updated for screen sizes

Ratings and Reviews

3.7 out of 5
3 Ratings

3 Ratings

DS_in_the_ATX ,

Mixed results, sadly...

I'm retracting my previous negative comments if possible; "operator malfunction" strikes again! If you're not getting results go to Settings, find the app & make sure it is allowed to use the microphone, voila!!

Really having fun with it now - cheers!!


phil.hj.lee ,

Awesome app; does as advertised, then more

Comes with 4 unique, quality pitch FX out of the box. Works perfect with AudioBus (including animoog & sunrizer). Overall, a great new tool thats been giving me a lot of inspiration with my ambient sound design work. Definitely looking forward to a slicker UI and more DSP options in the near future. More than willing to pay for any new effect units created by this developer

Tetrahecik ,

Really nice and helpful app

Gives great countermelodies in the major and minor. The volume knobs are also really helpful

App Privacy

The developer, Jonathan Pivar, 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.


Jonathan Pivar
21.1 MB

Requires iOS 11.0 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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