# Uzu, An Interactive Light Show vs fluidity HD

The clearest difference is price: fluidity HD at Free against Uzu, An Interactive Light Show's $3.99. fluidity HD also leads on iOS requirement (8.0 vs 17.6). Uzu, An Interactive Light Show's advantage is rating (4.8 vs 3.7) and in-app purchases (none vs 1). On ratings volume, update cadence, ads and device support there is nothing between them.

fluidity HD is free to download; Uzu, An Interactive Light Show costs $3.99 up front. fluidity HD sells 1 one-off in-app purchase. Uzu, An Interactive Light Show asks for nothing beyond the download.

Uzu, An Interactive Light Show holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 261 and 124 respectively. Written reviews point the same way: 91% of Uzu, An Interactive Light Show's written reviews are positive against 73% of fluidity HD's.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 18, 2026.

## The numbers

| Metric | Uzu, An Interactive Light Show | fluidity HD |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.8 (261 ratings)](https://appshunter.io/ios/app/uzu-an-interactive-light-show/id376551723/reviews)** | [3.7 (124 ratings)](https://appshunter.io/ios/app/fluidity-hd/id399403909/reviews) |
| Number of ratings | **261** | 124 |
| Positive reviews | **91.1% of reviews** | 73.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#93** | — |
| Size | 16 MB | 24 MB |
| Requires iOS | 17.6 | **8.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Colordodge Labs](https://appshunter.io/developer/376551726) | [nebulus design](https://appshunter.io/developer/351409194) |

## What reviewers say

### Uzu, An Interactive Light Show

[App page](https://appshunter.io/ios/app/uzu-an-interactive-light-show/id376551723)

**Currently charting:** #93 Top Paid · Entertainment (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**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


### fluidity HD

[App page](https://appshunter.io/ios/app/fluidity-hd/id399403909)

Experience a beautiful, real-time fluid dynamics simulation. Control the flow and colors of liquids with intuitive touch gestures. Unlock advanced features like ambient audio and video output through an in-app purchase.

**Highlights:** Real-time fluid dynamics simulation, Interactive touch controls, Stunning color customization, Ambient audio (in-app purchase), Snapshot and video output (in-app purchase)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version Unlock | $1.99 | one-time |

**What reviewers like**

- 🌈 Visually stunning and mesmerizing
- 🧘‍♀️ Calming and relaxing experience
- 🎨 Vibrant and customizable colors
- 👍 Great for kids and adults

**What reviewers complain about**

- 🐛 Crashes and freezes on some devices
- 🔇 Lack of audio/music features
- 💰 Paid version not worth the cost
- 🔋 High battery consumption

**Reported bugs**

- Crashes on double-tap
- Incompatible with newer iOS
- Stuck finger gestures

**Requested features**

- Add music/ambient sound options
- Ability to save/export creations
- More customization controls
- Support for latest iOS versions


## Frequently asked questions

### Is Uzu, An Interactive Light Show free?

Uzu, An Interactive Light Show costs $3.99, with no in-app purchases.

### Is fluidity HD free?

fluidity HD is free to download, with in-app purchases available.

### Which has better reviews, Uzu, An Interactive Light Show or fluidity HD?

Uzu, An Interactive Light Show is rated higher. Uzu, An Interactive Light Show averages 4.8 out of 5 from 261 ratings, while fluidity HD averages 3.7 from 124 ratings.

### Do Uzu, An Interactive Light Show or fluidity HD have ads?

Neither Uzu, An Interactive Light Show nor fluidity HD shows ads.

### Which is updated more often, Uzu, An Interactive Light Show or fluidity HD?

Uzu, An Interactive Light Show ships an update every 2 months, and fluidity HD every 2 months. Most recently, Uzu, An Interactive Light Show was updated on October 18, 2026 and fluidity HD on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*