* Winner of Apple's "App of the Week"
* Apple Rewind Best Generative Art and Sound App
* Reached #1 in 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

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

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

"This is absolutely the coolest iPad app I’ve ever come across. Heck, it’s likely the most awesome app for ANY device ever." - Chris Pirillo


Uzu is a Generative Design Playground - a sort-of math-physics-art-toy for anyone who ever loved spirographs, fireworks, planetariums, lava lamps, light sabers, pen lasers, tesla coils, christmas lights, or graphing calculators.

Points of light will shoot across the screen and fly to your command, twirling in a vortex of color and motion. Freeze and move Uzu in 3d space while contorting spirographic curves with your fingers. Uzu lets you quickly switch between 10 different modes of real-time animation by simply changing the number of touches you're using. You can spend countless hours discovering the many unique ways of playing and interacting with Uzu.

:::: FEATURES ::::

** Fully dynamic generative particle system
** Create incredible background images for your iPhone or iPad
** 21 unique animation modes can be applied to each number of touches
** 55 Pre-loaded factory presets
** Full customization of all features and settings
** Create and save user presets
** "Re-wire" animation modes as you see fit
** Rotational, translational, and reflective symmetry for each animation mode
** Thousands of possible combinations
** Drawing mode
** In-app quick help


:::: SUPPORT ::::

If you have any problems, questions, or stories you would like to share, please feel free to email me, and I'll answer as soon as I can.

What’s New

Version 3.1.2

Version 3.1.2
- Improved intro message: text is more clear and easier to dismiss.

Version 3.1.1
- Fixed bug where the app would crash when dismissing the keyboard

Version 3.1
- 64 bit support
- 15 new factory presets
- Redesigned user interface
- Improved autoplay animation
- New app icon
- On-screen access to quick actions: menu, next preset, previous preset, freeze mode, autoplay, screenshot
- Screenshot sharing to social media

Many thanks to all the fans who asked for the new update. And an even bigger thank you to Olga and Scarlett for their patience while I worked on this during evenings and weekends. I hope you all enjoy!

Ratings and Reviews

4.9 out of 5
87 Ratings
87 Ratings
Daffodil girl ,

Now I get it!!

Great visual entertainment! However, where are the instructions about how to save your own formula? I press + to add a new title, but then if I press Done and then make changes in the design parameters and color choices, they don't "Save". What's step one, then step 2, etc. Thanks for your quick response! 👏👏👏 After I wrote the review I thought, maybe it works in an opposite way to what I thought. So I chose a preset that I liked but wanted to tweak. It worked! Love that the user can create their own. It would have saved a lot of time & frustration, however, if a brief paragraph of instructions were included. Hoping you'll consider adding one next update. Changing my 3 🌟 🌟 🌟 to 5 now that I know how to do my own presets. Thanks again!

Developer Response ,

Thanks for the feedback. Sorry you're having issues with the UI. When you create a new preset by pressing the "+" button, you're saving the current state of all the controls in that new preset. I made it this way to help from accidentally saving over something you already like. So all you need to do is play with the controls until you get something you like, then just create a new preset from those settings.

BernSh ,

Exceeded my expectations

The very best time spent alters your experience of life. I had this after playing with an app called "Faces" which sketch artists use to draw composites of faces to identify someone when a photo isn't available. Speaking time with lots of different facial features trying to recreate the faces of people I know altered what I then started noticing when I looked at people with my "new" eyes looking for details I previously wasn't noticing. This app UZU with its depth of details, visual creativity, and thoughtful gestural controls achieves an engagement with the potential to likewise discover thur play. I applaud the author's achievement and appreciate what it must have taken to bring it this far. Thank you!

l4zarus ,

Just get it. Right meow. And prepare to 🤯.

This. Trust me, fellow wanderer. Get it and see for yourself, not worth reading another review.

Such a beautiful little app. Can tell the makers use and love their own product. Wonderfully designed, easy to use, yet powerful enough to do what anyone wants it to.

I absolutely love how the simple taps, touches, and motions of my fingers provide such a deep level control, it comes so naturally and always turns out looking amazing... at times, it feels like you’re creating universes! Just too cool!

Cannot wait to watch the jaws drop when I have people over and casually cast this onto my TV.

Not sure how to do that yet, but there MUST be a way! My only recommendation would be to make that stupid easy, and... Ability to integrate it with wireless color changing LED lights (eg Philips Hue), so that you can immerse an entire room great vibes between music, visualizer, and lights.


Jason K Smith
7.2 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Jason K Smith


  • Family Sharing

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

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