Free

Details

  • Released
  • Updated
  • January 10, 2014
  • April 27, 2026
VOSIS video #1 for iPhone
VOSIS screenshot #2 for iPhone
VOSIS screenshot #3 for iPhone
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About

This app transforms image data into sound, allowing for unique musical compositions and experimental sound design. It offers control over pitch, timbre, and envelopes to create shape-timbre relationships from visual input.

Image sonification
Visual music composition
Experimental sound design
Pixel luminance audification
Shape-timbre relationships
Adjustable pitch and timbre
ADSR envelope control
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What's New in VOSIS

2.2.5

April 27, 2026

HEIC image support

User reviews

Cool app

Really nice app

A real breakthrough

Previously, the only way I’d found to sonify images involved laboriously loading them into an obscure part of Logic. It was a drawn-out and clunky process and once you generated a sound, you couldn’t do much with it.

So I’ve waited a long time for something like VOSIS and it’s all I hoped for. Real time sonic manipulation of images that can produce surprising, fascinating results (though as someone else said, the tonal range could be wider). Still, sounds can always be tweaked further, and extracting and manipulating the first sounds from images and even video can be done really swiftly. There are a couple of glitches and it could perhaps be a bit more intuitive, but overall it’s great and I’m sure it will keep evolving. I’ve already used it successfully for a live show and look forward to seeing what new sounds and inspiration it can give me in the pro version.
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It’s back and better than ever!

The Pro version adds very useful and creative features. If music and sound from the fringe is your thing, this is a must have!

Broke

Seemed like a great app. Several videos I watched about it made it sound really unique. Unfortunately it no longer functions. Tried deleting and redownloading. But no dice. 😞

Broken

First time I tried to load one of my own images the app crashed and I could never open it again from then on .... deleted!

Developer apps

FAQ

What is VOSIS?

VOSIS is a music application that converts greyscale pixel data from images into sound. It's designed for visual music composition and experimental sound design, allowing users to create unique audio based on visual input.

How does VOSIS create sound from images?

It audifies pixel luminance values, establishing relationships between shapes and timbres. The app controls pixel scan rates for pitch and uses an ADSR envelope for dynamic sound shaping.

Can I record my creations with VOSIS?

The free version of VOSIS offers limited recording capabilities. For unlimited recording and additional features like presets, users can explore VOSIS Pro.

Is VOSIS suitable for beginners?

While VOSIS is an experimental tool, its core functionality of image sonification is straightforward. The app provides controls for pitch, octave, scale, and timbre, offering a unique entry point into sound design.

What devices does VOSIS support?

VOSIS is available for iPhone, iPad, and iPod. It is rated for ages 4 and up.

How often is VOSIS updated?

The latest version of VOSIS is 2.2.1, last updated on December 28, 2025. This indicates a history of ongoing development and support.

Does VOSIS have ads?

No, VOSIS does not contain advertisements. It is a free application without any ad interruptions.

Where can I find sound examples and demos for VOSIS?

You can find sound examples, demo videos, and a user guide for VOSIS on its official website, vosis.app.