iPad Screenshots


PolyHarp is a virtual musical instrument and a thought experiment.

It takes the basic idea of a chorded zither and extends it to large numbers of chord choices, made out of any kinds of intervals, multi-string courses, fretting, and massive polyphony. It's a testbed for harmonic theory as well as a great multi touch simulation of the good old "idiot zither" you have in the attic. PolyHarp can translate many of these innovations to MIDI and is a powerful MIDI controller.

PolyHarp comes with a large number of presets, exploring many variants on stringed instruments, but its real power is its ability to build strange new chords, layouts, and controls into otherwise impossible instruments.

PolyHarp supports Audiobus 3, including saving setups, and IAA.

What’s New

Version 1.0.14

Bug fixes many of which I've forgotten! Some internal rejiggering of code too. Just trying to keep my faithful users in synch!
New labelled chord bars- and as an example, Pelog and Madenda Hammered instruments.

Ratings and Reviews

4.8 out of 5
6 Ratings

6 Ratings

Wet Food ,

So much better than what you think it is.

Simply brilliant and deep

Oceans in space ,

Brilliant genius

This app creator must be an enlightened sound designer! This app is so intricate and Intense with its almost overwhelming. This thing so far is like a stringed blank slate with anything you want to create even odd harmonic subdividing it’s here. Midi out and your golden. All his apps are creative but this is the magnum opus

Meanestpenis ,


Just needs to be made into auv3


Henry Lowengard
18.4 MB

Requires iOS 9.3 or later. Compatible with iPad.



Age Rating


  • Family Sharing

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

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