# fluidity HD vs KiraFlow

The clearest difference is rating: KiraFlow at 4.6 against fluidity HD's 3.7. fluidity HD's advantage is ads (none vs shown) and iOS requirement (8.0 vs 15.0). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. fluidity HD sells 1 one-off in-app purchase and KiraFlow sells 14 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

KiraFlow holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 125 and 326 respectively. Written reviews point the same way: 73% of fluidity HD's written reviews are positive against 78% of KiraFlow's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | fluidity HD | KiraFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (125 ratings)](https://appshunter.io/ios/app/fluidity-hd/id399403909/reviews) | **[4.6 (326 ratings)](https://appshunter.io/ios/app/kiraflow-flowing-glitter/id1525172102/reviews)** |
| Number of ratings | 125 | **326** |
| Positive reviews | 73.3% of reviews | **78.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 24 MB | 83 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [nebulus design](https://appshunter.io/developer/351409194) | [Masataka Hakozaki](https://appshunter.io/developer/323346554) |

## What reviewers say

### 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


### KiraFlow

[App page](https://appshunter.io/ios/app/kiraflow-flowing-glitter/id1525172102)

Experience a calming and interactive art piece with flowing glitter particles that react to your device's tilt and touch. Enjoy a variety of glitter types and soothing twinkle sound effects to relax and unwind.

**Highlights:** Flowing glitter particles, Interactive tilt and touch controls, Various glitter types (stars, gems, etc.), Twinkle sound effects, Calming and sleep aid, Particle-based fluid simulation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PACK 001 "TINY" | $0.99 | one-time |
| PACK 003 "LAME" | $0.99 | one-time |
| PACK 004 "GALAXY" | $0.99 | one-time |
| PACK 005 "PHOTON" | $0.99 | one-time |
| PACK 006 "GEM" | $0.99 | one-time |
| PACK 007 "BLOOM" | $0.99 | one-time |
| PACK 010 "DOT" | $0.99 | one-time |
| PACK 011 "NEON" | $0.99 | one-time |
| PACK 015 "RAINBOW" | $0.99 | one-time |
| PACK 017 "STAR II" | $0.99 | one-time |
| PACK 013 "BUBBLE" | $0.99 | one-time |
| PACK 008 "HALF" | $0.99 | one-time |
| ADS REMOVAL | $1.99 | one-time |
| COMPLETE PACK | $6.99 | one-time |

**What reviewers like**

- ✨ Beautiful visuals
- 😌 Relaxing and calming
- 🤩 Mesmerizing and satisfying
- 🎶 Pleasant sounds/ASMR
- 👍 Easy to use

**What reviewers complain about**

- 😩 Too many ads
- 💰 Expensive full version/packs
- 🐌 Slow glitter movement (for some)
- 🚫 Can't save work
- ❌ Laggy performance (for some)

**Reported bugs**

- No sound issue
- App kicks out on startup
- Not received money taken immediately

**Requested features**

- Option to adjust glitter speed
- More sound options or sound customization
- Ability to save creations/screenshots
- More free glitter color options
- Option to create custom glitter colors/gradients


## Frequently asked questions

### Is fluidity HD free?

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

### Is KiraFlow free?

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

### Which has better reviews, fluidity HD or KiraFlow?

KiraFlow is rated higher. fluidity HD averages 3.7 out of 5 from 125 ratings, while KiraFlow averages 4.6 from 326 ratings.

### Do fluidity HD or KiraFlow have ads?

KiraFlow shows ads; fluidity HD does not.

### Which is updated more often, fluidity HD or KiraFlow?

fluidity HD ships an update every 2 months, and KiraFlow every 2 months. Most recently, fluidity HD was updated on October 29, 2026 and KiraFlow on October 24, 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.*