# Uzu, An Interactive Light Show

> Interactive generative art and sound toy for creating dynamic light shows. (iPhone/iPad app by Colordodge Labs.)

- Source: https://appshunter.io/ios/app/uzu-an-interactive-light-show/id376551723 (this page in markdown: same URL + `.md`)
- Developer: [Colordodge Labs](https://appshunter.io/developer/376551726)
- Category: Entertainment, Games
- Price: $3.99
- Rating: 4.80/5 from 261 App Store ratings · 367 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 16 MB
- Languages: American English
- Released: 2010-06-12
- Data updated: 2026-08-27
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/uzu-an-interactive-light-show/id376551723/reviews.md

## What is Uzu, An Interactive Light Show?

"This is doodling for digital natives . . . mind blowing." — Wired Magazine

"Uzu for iPad is endlessly complicated, simply fun." — Ars Technica

Uzu is a generative design playground — a math-physics-art toy for anyone who ever loved spirographs, fireworks, planetariums, lava lamps, light painting, kaleidoscopes, or graphing calculators. Touch the screen and watch thousands of particles swirl, spiral, and bloom in real time. Change the entire feel by simply changing how many fingers you use.

Relax. Play. Meditate. Create wallpapers. Or lose yourself for an hour tweaking symmetry, animation modes, and effects. Uzu is endlessly deep and simply fun.

Now completely rebuilt with a native Metal engine and a beautiful SwiftUI interface — smoother, richer, and more powerful than ever.

FEATURES
• Fully dynamic generative particle system
• 21 animation modes for each touch count (0 through 10)
• Rotational, translational, and reflective symmetry
• 122 factory presets plus unlimited user presets
• 10 visual effects: Glow, Warp, Kaleidoscope, Sparkle, Feedback, Color, Gradient, Pixelate, Scanlines, and Vignette
• Export and import presets — save, share, and back up your creations
• Fast preset switching, shake to hide the menu, adjustable quality settings
• Freeze mode, microphone reactivity, and thousands of possible combinations
• Create stunning backgrounds for iPhone and iPad

ACCLAIM
• Winner of Apple's "App of the Week"
• Apple Rewind: Best Generative Art and Sound App
• Reached #1 on the App Store
• Featured in Apple's "App Store Essentials Hall of Fame"
• Seen in the "Year of the iPad" video at the iPad keynote
• Featured as an Apple Staff Favorite

SUPPORT
Questions or stories? We'd love to hear from you.

jason@colordodge.com
www.colordodge.com

## Key features

- Generative particle system
- Real-time animation modes
- Interactive 3D manipulation
- Drawing mode
- Microphone input response
- Customizable presets

## Chart rankings

- #122 in Top Paid · Entertainment (US App Store)

## What do users think of Uzu, An Interactive Light Show?

Overall sentiment: positive

**Pros**

- 👍 Mesmerizing visuals
- 🎨 Endless creative possibilities
- 💡 Great for relaxation and meditation
- 🎨 Impressive color and pattern generation
- 👍 Fun and engaging for all ages
- 🎨 Showcases iPad's multitouch capabilities

**Cons**

- 🐛 Crashes and stability issues on some devices
- 🔧 Limited customization options
- 🔧 Lack of music/sound integration
- 🔧 Outdated UI on newer iPads

**Commonly reported bugs**

- Crashes on iOS 4.2 and newer
- Menu controls not working on iPad Pro
- Screenshot feature not functioning properly

**Most requested features**

- Add music/sound reactive features
- Implement full-screen mode without UI
- Introduce more advanced preset options
- Add ability to save and share custom presets
- Optimize performance for latest iPad models

## Recent user reviews (10 of 367)

All indexed reviews: https://appshunter.io/ios/app/uzu-an-interactive-light-show/id376551723/reviews.md

### 5/5 — Great Update

*2026-07-24, version 4.2*

I have used this app on and off for years and have enjoyed it, but I have to say the update is Awesome and it’s even better and easier to use.

### 5/5 — Fantastic

*2026-07-10, version 4.2*

I had this app since I was a little kid, and seeing it updated becoming better than ever makes me so happy!

### 1/5 — Uzu

*2026-06-29, version 4.1*

Without a doubt, this is the best app I have ever, ever had. I enjoy it for hours on end. What a great app. I love it.

### 5/5 — thanks for legacy presets

*2026-06-28, version 4.1*

longtime user; missed the old presets. left a 1* review, developers swiftly put them back. 

look forward to playing with the new ones, too. 

as a thank you, I bought both of your other apps today.

### 5/5 — WOW!

*2026-06-25, version 4.1*

👍😃👍

### 4/5 — Soothing

*2026-06-20, version 4.1*

Very pleasant way to use fingers and eyes to pass time ;-)

### 5/5 — Nostalgic and beautiful

*2026-06-17, version 4.0*

My father always let me play this on his iPad when I was little. I just downloaded it again at 19 and it’s just as soothing as I remember

### 5/5 — Never gets old (unlike me!)

*2026-06-15, version 4.0*

Still loving this 15 years on…!

### 5/5 — Incredible

*2026-02-06, version 3.2.1*

Beautiful, mesmerizing, intuitive. One of my favourite apps.

### 5/5 — Code Beauty

*2025-12-16, version 3.2.1*

This app is mesmerizing and goes to show how magical coding is

## Frequently asked questions about Uzu, An Interactive Light Show

### What is Uzu?

Uzu is a generative design playground that functions as a math-physics-art toy. It allows users to create dynamic light shows with interactive particle systems, twirling colors, and motion. You can manipulate the visuals in 3D space and explore thousands of combinations through various animation modes.

### What are the key features of Uzu?

Key features include a fully dynamic generative particle system, 21 unique animation modes, interactive 3D manipulation, a drawing mode, and animations that respond to microphone input. Users can also customize all features, save presets, and re-wire animation modes.

### How much does Uzu cost?

Based on the provided information, Uzu is a paid application. There are no mentions of in-app purchases or advertisements, indicating a one-time purchase model.

### What devices is Uzu compatible with?

The description frequently mentions iPad and iPhone, suggesting compatibility with Apple's iOS devices. It is highlighted as an app for digital natives and has received accolades from Apple's App Store.

### What are some common use cases for Uzu?

Uzu can be used for creating incredible background images for your iPhone or iPad, exploring artistic and mathematical concepts through interactive visuals, and for general creative expression. It's described as a toy for anyone who enjoys spirographs, fireworks, or other visually dynamic phenomena.

## Version history (last 5 releases)

### 4.2 — 2026-07-02

Uzu 4.2 is here — and it’s a colorful one.
Meet the new Colors panel: your dedicated space for Simple mode, custom palettes, randomization, and palette animation.

———— Version 4.2 ———— 

• New Colors panel with Simple color mode

• Save, load, and animate your own color palettes

• Color randomization for fresh looks in one tap

• Favorite presets now appear at the top of the list

• Choose which preset category autoplay uses

• 22 new factory presets
• New Gradient effect

• Glow effect: additional parameters

• Kaleidoscope: new Radial mode, plus pinch and rotate gestures

• Improved tunnel warp parameters

• Better macOS (Designed for iPad) support

• Improved line rendering at reduced quality

• Various UI improvements


———— Version 4.1 ———— 

• Added 45 factory presets
• Added all 55 legacy factory Presets
• You can now tap the Preset section header to quickly jump to a specific section
• Added grid mode to the preset panel - access it by tapping the preset section header


———— Version 4.0 ———— 

Uzu has been completely rebuilt from the ground up — faster, more beautiful, and more powerful than ever.

• All-new Metal rendering engine for smoother, richer particle visuals
• Redesigned SwiftUI interface that's cleaner and easier to use
• 9 new shader effects: Glow, Warp, Kaleidoscope, Sparkle, Feedback, Color, Pixelate, Scanlines, and Vignette
• 67 refreshed factory presets, ready to explore
• Export and import presets — share your creations or back them up
• Fast preset switching — jump between presets from the screen edges
• Shake to show or hide the interface for an uninterrupted light show
• Choose render quality from Low to Ultra
• Reorder your user presets
• Save over the current preset when tweaking a favorite look

### 4.1 — 2026-06-19

Based on user feedback, I have brought back all the factory presets from version 3.0. There is now a section in the preset list called 'Legacy Presets' that contains all of the presets from version 3.0. The 'Factory Presets' section has the new presets from version 4.0.

---------------------- Version 4.1 ----------------------

• Added 45 factory presets
• Added all 55 legacy factory Presets
• You can now tap the Preset section header to quickly jump to a specific section
• Added grid mode to the preset panel - access it by tapping the preset section header

---------------------- Version 4.0 ----------------------

Uzu has been completely rebuilt from the ground up — faster, more beautiful, and more powerful than ever.

• All-new Metal rendering engine for smoother, richer particle visuals
• Redesigned SwiftUI interface that's cleaner and easier to use
• 9 new shader effects: Glow, Warp, Kaleidoscope, Sparkle, Feedback, Color, Pixelate, Scanlines, and Vignette
• 67 refreshed factory presets, ready to explore
• Export and import presets — share your creations or back them up
• Fast preset switching — jump between presets from the screen edges
• Shake to show or hide the interface for an uninterrupted light show
• Choose render quality from Low to Ultra
• Reorder your user presets
• Save over the current preset when tweaking a favorite look

Thank you for being part of Uzu's journey since 2010. We hope you love this new chapter.

### 4.0 — 2026-06-11

Uzu has been completely rebuilt from the ground up — faster, more beautiful, and more powerful than ever.

• All-new Metal rendering engine for smoother, richer particle visuals
• Redesigned SwiftUI interface that's cleaner and easier to use
• 9 new shader effects: Glow, Warp, Kaleidoscope, Sparkle, Feedback, Color, Pixelate, Scanlines, and Vignette
• 67 refreshed factory presets, ready to explore
• Export and import presets — share your creations or back them up
• Fast preset switching — jump between presets from the screen edges
• Shake to show or hide the interface for an uninterrupted light show
• Choose render quality from Low to Ultra
• Reorder your user presets
• Save over the current preset when tweaking a favorite look

Thank you for being part of Uzu's journey since 2010. We hope you love this new chapter.

### 3.2.1 — 2020-08-07

--- VERSION 3.2.1
- Fixed bug where mic input wasn't working correctly on some devices

--- VERSION 3.2
This update includes high frame rates, slow motion, and microphone audio responsiveness. In order to make high frame rates possible I had to rewrite all of the animation modes to support a variable time scale. I was then able to use this variable time scale to respond to audio from the microphone. There is a slider in the options panel that allow you to adjust the microphone sensitivity. Thank you so much to all the people who continue to download and support this app. 

- Support for high frame rates. Uzu will now use the maximum frame rate of the device. This means 60fps for iPhone and iPad and 120fps for iPad Pro.
- Introduced "Time Scale" property slider that allows you to adjust the speed of the animations without changing the overall shape. See Uzu in slow mo!
- Renamed "Speed" to "Energy". This was done to help differentiate the two properties for affecting the overall speed.
- Uzu now reacts to audio from the microphone. When this mode is enabled, Uzu maps the mic levels to the "Time Scale" property.
- Added mic button to quick action menu.
- The quick action menu now hides when touching the screen.
- The quick action menu hides after a shorter period when not touching the screen.
- Added a slider in the options panel to adjust microphone sensitivity.
- Fixed a number of UI bugs where text would be the wrong color.

### 3.2 — 2020-08-04

This update includes high frame rates, slow motion, and microphone audio responsiveness. In order to make high frame rates possible I had to rewrite all of the animation modes to support a variable time scale. I was then able to use this variable time scale to respond to audio from the microphone. There is a slider in the options panel that allow you to adjust the microphone sensitivity. Thank you so much to all the people who continue to download and support this app. 

- Support for high frame rates. Uzu will now use the maximum frame rate of the device. This means 60fps for iPhone and iPad and 120fps for iPad Pro.
- Introduced "Time Scale" property slider that allows you to adjust the speed of the animations without changing the overall shape. See Uzu in slow mo!
- Renamed "Speed" to "Energy". This was done to help differentiate the two properties for affecting the overall speed.
- Uzu now reacts to audio from the microphone. When this mode is enabled, Uzu maps the mic levels to the "Time Scale" property.
- Added mic button to quick action menu.
- The quick action menu now hides when touching the screen.
- The quick action menu hides after a shorter period when not touching the screen.
- Added a slider in the options panel to adjust microphone sensitivity.
- Fixed a number of UI bugs where text would be the wrong color.

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## More apps by Colordodge Labs

- [Kinetiform](https://appshunter.io/ios/app/kinetiform/id1599140822)
- [Fluidium](https://appshunter.io/ios/app/fluidium/id6745104628)

All apps by Colordodge Labs: https://appshunter.io/developer/376551726

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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 2026-08-27.*