Comparison

Uzu, An Interactive Light Show vs Gravilocity

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Uzu, An Interactive Light Show

Explore a generative design playground that combines math, physics, and art. Create dynamic light shows with interactive particle systems, customizable animations, and drawing modes. Experience endless possibilities for visual creation and interaction.

Highlights
  • Generative particle system
  • Real-time animation modes
  • Interactive 3D manipulation
  • Drawing mode
  • Microphone input response
  • Customizable presets
Features
Read full description

"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

About

Gravilocity

Explore a dynamic particle playground where thousands of stars react to your touch, gravity, and even music. Create stunning visual effects with configurable options, fractal forms, and lightning arcs.

Highlights
  • Thousands of flying stars
  • Touch and gesture interaction
  • Gravity and accelerometer response
  • Music visualization
  • Fractal form generation
  • Lightning arcs between touches
  • Configurable drawing options
Features
Read full description

Play with thousands of flying stars. Watch as stars respond to your fingers, while you pull, push and spin them. Watch as they fall and bounce in response to gravity and the accelerometer. Even make them pulse to a musical beat from the microphone. Hundreds of configurable options add to the fun. Features -Pinch and zoom and the stars stretch off into infinity making fractal forms. -Touch with multiple fingers and watch lightning arc between your touches -added VGA out support iPad/iPhone4. -many different drawing options -Preset system, build something interesting and save it for later. -Shape memory feature. Stars can fly home after you push them around. Watch Gravilocity in action: http://www.youtube.com/watch?v=IbjQU7DOjT4 Gravilocity is built on the critically acclaimed iBeams special effects system, which has been used to make iBeams and iBeams HD. [HINTS] -To make a parameter respond to the microphone press any one of the buttons with a blue arrow on it. A controller window shows up, press mic and the parameter will now respond to the microphone. Gravilocity was inspired by gravilux, and gravitarium, not to mention all the other particle play apps out there. *****Totally Awesome.... Running on an iPad this is seriously psychedelic. I have tried every other visualiser on the iPad and apart from it's bigger brother I-beams this eats them all for breakfast. I have said it before but the author of this software is a real genius. - AAWh *****One of the best of it's type *****Its the best particle manipulator I've messed with. Really cool job Created by Gedalia Pasternak, a Computer Graphics Engineer whose work has been seen in television commercials, video games, and the occasional military training system. As well as in the hands of bored teenagers at art museums.

Screenshots

Uzu, An Interactive Light Show4 screens
Gravilocity4 screens

Verdict

The call

Uzu, An Interactive Light Show and Gravilocity both sit at 4.8 stars, but that hides the real split: 91% of Uzu, An Interactive Light Show's written reviews are positive against 76% of Gravilocity's. Uzu, An Interactive Light Show also leads on ratings volume (265 vs 73). Gravilocity's advantage is price ($0.99 vs $3.99) and iOS requirement (13.0 vs 17.6). On rating, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Uzu, An Interactive Light Show costs $3.99 and Gravilocity $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Uzu, An Interactive Light Show against 4.7 for Gravilocity. Both are backed by a comparable volume of ratings — 265 and 73 respectively. Written reviews are what separate them: 91% of Uzu, An Interactive Light Show's written reviews are positive against 76% of Gravilocity's.

UpkeepUpdate frequency

Uzu, An Interactive Light Show ships an update every 2 months, Gravilocity monthly. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 6 level
Uzu, An Interactive Light Show versus Gravilocity: the parameters behind the verdict, then further details
ParameterUzu, An Interactive Light ShowGravilocity
Price$3.99$0.99 — better
Rating4.8 (265 ratings) — better4.7 (73 ratings)
Positive reviews91.1% of reviews — better76.3% of reviews
Number of ratings265 — better73
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size16 MB18 MB
Age rating4+4+
DeveloperColordodge Labsgedalia.net

Customer experience

Uzu, An Interactive Light Show

All ratings261 ratings
Positive95.0%
Neutral2.3%
Negative2.7%
Written reviews369 reviews
Positive91.1%
Neutral4.1%
Negative4.9%

Gravilocity

All ratings73 ratings
Positive90.4%
Neutral4.1%
Negative5.5%
Written reviews236 reviews
Positive76.3%
Neutral5.1%
Negative18.6%

User reviews

Uzu, An Interactive Light Show

From 265 App Store ratings

What we love

  • 👍 Mesmerizing visuals
  • 🎨 Endless creative possibilities
  • 💡 Great for relaxation and meditation
  • 🎨 Impressive color and pattern generation
  • 👍 Fun and engaging for all ages

Room to improve

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

Gravilocity

From 73 App Store ratings

What we love

  • 🤩 Mesmerizing visuals
  • 🎨 Endless customization options
  • 💫 Hypnotic and relaxing experience
  • 🎉 Fantastic particle effects
  • 🤖 Highly responsive and interactive

Room to improve

  • 🐛 Occasional crashes and glitches
  • 🤔 Unintuitive controls and settings
  • 🔋 High battery consumption
  • 📱 Compatibility issues on older devices
  • 🔇 Lack of music/audio integration

Bugs and requests

Uzu, An Interactive Light Show

Reported bugs

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

Requested features

5 requests
  • 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

Gravilocity

Reported bugs

4 issues
  • App crashes on launch for some users
  • Settings menu is unresponsive at times
  • Visuals don't scale properly on iPad
  • Bluetooth connection issues when using music

Requested features

5 requests
  • Add screen recording capability
  • Improve Bluetooth/audio integration
  • Provide more preset visualizations
  • Enhance color customization options
  • Implement a tutorial or user guide

In-app purchases

None

Uzu, An Interactive Light Show

No in-app purchases

None

Gravilocity

No in-app purchases

Questions

Is Uzu, An Interactive Light Show free?
Uzu, An Interactive Light Show costs $3.99, with no in-app purchases.
Is Gravilocity free?
Gravilocity costs $0.99, with no in-app purchases.
Which has better reviews, Uzu, An Interactive Light Show or Gravilocity?
Uzu, An Interactive Light Show is rated higher. Uzu, An Interactive Light Show averages 4.8 out of 5 from 265 ratings, while Gravilocity averages 4.7 from 73 ratings.
Do Uzu, An Interactive Light Show or Gravilocity have ads?
Neither Uzu, An Interactive Light Show nor Gravilocity shows ads.
Which is updated more often, Uzu, An Interactive Light Show or Gravilocity?
Uzu, An Interactive Light Show ships an update every 2 months, and Gravilocity monthly. Most recently, Uzu, An Interactive Light Show was updated on October 29, 2026 and Gravilocity on October 21, 2026.

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