Comparison

Uzu, An Interactive Light Show vs Flasia

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

Flasia

This app offers a visually stunning and interactive experience with dynamic, artistic displays. It's designed to inspire creativity, provide a change of pace, or serve as unique entertainment and decor.

Highlights
  • 5-Finger Multi-touch Display
  • Customizable particle effects
  • Gesture Control and Multi-Touch Drawing modes
  • Fluid effects with high FPS
  • Optional music integration
Features
Read full description

::: What is Flasia? ::: • Flasia is a highly complex, kinetic, and interactive visualizer yet it is also an amazingly beautiful work of art. • Flasia is designed to help people who want to think more creatively or who need a change of pace. • Flasia is an excellent game/toy/party entertainment/interior design element for anyone who loves fireworks, whirlwinds, firefly lights, aurora, rainbow, wave, fluid, Jackson Pollock painting ::: Features ::: • 5-Finger Multi-touch Display! • 5 Music choices by Aden Ray (On/Off available)! • Customize Particle Length, Number, & Size! • 2 Play Modes (Gesture Control and Multi-Touch Drawing)! • Awesome fluid effect with high FPS ::: Support ::: If you have any problems, questions, concerns, or ideas related to this app, please feel free to contact me. I would really like to hear what you think. sunglab@gmail.com www.facebook.com/sunglabcom www.twitter.com/sunglabcom www.sunglab.com

Screenshots

Uzu, An Interactive Light Show4 screens
Flasia4 screens

Verdict

The call

The clearest difference is price: Flasia at Free against Uzu, An Interactive Light Show's $3.99. Flasia also leads on iOS requirement (15.6 vs 17.6). Uzu, An Interactive Light Show's advantage is ads (none vs shown) and review sentiment (91% vs 76%). On ratings volume, in-app purchases and device support 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

Flasia is free to download; Uzu, An Interactive Light Show costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Uzu, An Interactive Light Show holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 266 and 146 respectively. Written reviews point the same way: 91% of Uzu, An Interactive Light Show's written reviews are positive against 76% of Flasia's.

UpkeepUpdate frequency

Uzu, An Interactive Light Show ships an update every 2 months, Flasia every 3 months. The most recent releases landed on November 10, 2026 and November 2, 2026 respectively.

Scorecard7 real differences · 3 level
Uzu, An Interactive Light Show versus Flasia: the parameters behind the verdict, then further details
ParameterUzu, An Interactive Light ShowFlasia
Price$3.99Free — better
Rating4.8 (266 ratings) — better4.6 (146 ratings)
Positive reviews91.1% of reviews — better76.5% of reviews
Number of ratings266 — better146
Update frequencyEvery 2 months — betterEvery 3 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.6 — better
Further details — not scored
Size16 MB89 MB
Age rating4+4+
DeveloperColordodge LabsSungLab Inc

Customer experience

Uzu, An Interactive Light Show

All ratings261 ratings
Positive95.0%
Neutral2.3%
Negative2.7%
Written reviews371 reviews
Positive91.1%
Neutral4.0%
Negative4.9%

Flasia

All ratings146 ratings
Positive90.4%
Neutral4.8%
Negative4.8%
Written reviews34 reviews
Positive76.5%
Neutral8.8%
Negative14.7%

User reviews

Uzu, An Interactive Light Show

From 266 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

Flasia

From 146 App Store ratings

What we love

  • ✨ Visually stunning and beautiful
  • 😌 Calming and relaxing experience
  • 🎶 Pleasant and soothing music
  • 💖 Supports developer's hard work
  • 🤩 Unique and mesmerizing visuals

Room to improve

  • 😠 Frequent and intrusive ads
  • 🐛 App becomes messed up after ads
  • 🔄 Recent update changed the feel
  • 📱 Lacks portrait mode support
  • 🚫 No response from support

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

Flasia

Reported bugs

4 issues
  • App appears on 75% of iPad screen after ads
  • Music not playing on iPad Mini & iPhone 8
  • Music turned off after second use
  • App not supporting portrait mode

Requested features

4 requests
  • Option to revert to old design
  • Add a record button
  • Tutorial for maneuvers
  • Support for iPhone X

In-app purchases

None

Uzu, An Interactive Light Show

No in-app purchases

None

Flasia

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 Flasia free?
Flasia is free to download, with no in-app purchases.
Which has better reviews, Uzu, An Interactive Light Show or Flasia?
Uzu, An Interactive Light Show is rated higher. Uzu, An Interactive Light Show averages 4.8 out of 5 from 266 ratings, while Flasia averages 4.6 from 146 ratings.
Do Uzu, An Interactive Light Show or Flasia have ads?
Flasia shows ads; Uzu, An Interactive Light Show does not.
Which is updated more often, Uzu, An Interactive Light Show or Flasia?
Uzu, An Interactive Light Show ships an update every 2 months, and Flasia every 3 months. Most recently, Uzu, An Interactive Light Show was updated on November 10, 2026 and Flasia on November 2, 2026.

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