# Zen Musical Harmonizer ZMH-1 — Four Fun Ways To Harmonize!

> Vocal and instrument harmonizer app with four distinct real-time harmony modes. (iPhone/iPad app by Jonathan Pivar.)

- Source: https://appshunter.io/ios/app/zen-musical-harmonizer-zmh-1/id1086766836 (this page in markdown: same URL + `.md`)
- Developer: [Jonathan Pivar](https://appshunter.io/developer/883754214)
- Category: Music, Entertainment
- Price: $1.99
- Rating: 3.10/5 from 7 App Store ratings · 15 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 9 MB
- Languages: American English
- Released: 2016-04-09
- Data updated: 2026-07-22
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/zen-musical-harmonizer-zmh-1/id1086766836/reviews.md

## What is Zen Musical Harmonizer ZMH?

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
**Stereo
**Pan Knob For Each Channel
**Volume For Each Channel


Have a Zen Harmony experience.

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

## Key features

- Playable chord harmonizer
- Pseudo-smart key-based harmonizer
- Interval shifter
- Octave layering
- Supports Audiobus and Inter-App Audio
- Stereo and per-channel volume/pan controls

## Recent user reviews (10 of 15)

All indexed reviews: https://appshunter.io/ios/app/zen-musical-harmonizer-zmh-1/id1086766836/reviews.md

### 1/5 — hopefully it improves

*2024-02-09, version 1.2.0*

- doesn't do that much. I am happy to support upcoming developers. But a lot of free apps do a lot more in terms of sound modification. Hopefully this will improve with new revisions. Looking forward to them. Keep trying and improving. At the moment it's not worth the price.
--------

### 1/5 — Works for a few seconds

*2024-01-28, version 1.2.0*

It crashes every few seconds … too bad because for a few seconds it sounds ok.

### 4/5 — Simple but powerfull

*2023-05-13*

Welldone. Better than some very expensive equipment

### 1/5 — Horrible

*2022-07-23*

It sounds horrible when it decides to sound. Usually It doesn’t do nothing at all, sometimes it generates weird harmonics

### 1/5 — Bought, tried, and deleted

*2022-04-24*

This app is barely functional. I bought it, tried it and deleted it.

### 1/5 — wast of money

*2022-02-25, version 1.2.0*

Does not work, maybe for 5 or 6 seconds, it sounds like crap, then turns to nothing but static.

### 5/5 — Absolutely fabulous

*2020-11-13, version 1.1.0*

This is an extremely good software.
Works flawlessly as an effect for live input with the ability to play the source too. Add to that its use as an effect in AudioBus and you have something very, very useable.

Low CPU footprint, file size AND ridiculous low cost.

Winner.

### 1/5 — unbrauchbar

*2020-07-30*

absolut unbrauchbar.

### 5/5 — Needs midi control for five stars

*2019-12-15, version 1.0.3*

Great harmoniser/pitch shifter. With midi control I probably wouldn’t need hardware pitch shifters. The sound can be similar to the first digitech whammy. 

Thank you for iPhone and iPad versions.

Would like to see more effects from this developer.

Works in AUM and Audiobus.

### 1/5 — Does not work

*2019-01-28, version 1.0.3*

All I get is static.

## Frequently asked questions about Zen Musical Harmonizer ZMH

### What are the four harmony modes in Zen Musical Harmonizer?

Zen Musical Harmonizer offers a Playable Harmonizer with chord buttons, a Pseudo-Smart Harmonizer that reads your input and key, a Shifter for intervals, and an Octave mode for layering up to five octaves.

### What devices does Zen Musical Harmonizer support?

Zen Musical Harmonizer is available for iPhone, iPad, and iPod. It supports landscape orientation and stereo output.

### How much does Zen Musical Harmonizer cost?

Zen Musical Harmonizer is a paid app priced at $1.99. There are no in-app purchases or advertisements.

### Does Zen Musical Harmonizer work offline?

The app requires headphones and a microphone or audio interface. To ensure uninterrupted audio, you may need to adjust your device's auto-lock settings to 'Never'.

### What is the age rating for Zen Musical Harmonizer?

Zen Musical Harmonizer has an age rating of 4+, making it suitable for a wide range of users interested in music creation.

### How often is Zen Musical Harmonizer updated?

The latest version of Zen Musical Harmonizer is 1.3.0, last updated on January 28, 2025. This indicates regular maintenance and potential feature additions.

### Can Zen Musical Harmonizer be used with other music apps?

Yes, Zen Musical Harmonizer supports Audiobus and Inter-App Audio, allowing it to be integrated with other compatible third-party music applications.

### What is the user sentiment for Zen Musical Harmonizer?

Based on 7 ratings, Zen Musical Harmonizer has an average rating of 3.1 stars. This suggests a mixed reception from users.

## Version history (last 5 releases)

### 1.3.0 — 2025-01-28

Update to iOS 18. Bug fixes.

### 1.2.0 — 2021-10-24

Updated for iOS 15

### 1.1.0 — 2020-06-13

* Built for iOS 13
* Updated for screen sizes

### 1.0.3 — 2016-09-24

**Now in Stereo
**New Graphics
**Support For Landscape Orientation (Portrait Orientation No Longer Available)
**Each Channel Now Gets A Respective Pan Knob
**New Icon
**New Help Manual
**Supports iOS 10

### 1.0.2 — 2016-06-02

Thank you for using Zen Musical Harmonizer!

- Added a "Bypass" button--toggle between effected and dry signal.
- Added a link to zenmusicalharmonizer.com in each help view
- Bug fixes

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## More apps by Jonathan Pivar

- [Geeetar Synth](https://appshunter.io/ios/app/geeetar-synth/id1617569661)
- [Lyric Hack](https://appshunter.io/ios/app/lyric-hack/id6599861234)

All apps by Jonathan Pivar: https://appshunter.io/developer/883754214

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-22.*