fluidity HD vs KiraFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
fluidity HD
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.
- Real-time fluid dynamics simulation
- Interactive touch controls
- Stunning color customization
- Ambient audio (in-app purchase)
- Snapshot and video output (in-app purchase)
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A beautiful interactive realtime fluid dynamics simulation, control fluid flow and stunning colours at the tips of your fingers. In-App purchase enables ambient audio, double tap screen to take a snapshot, settings storage, and menuless video out using VGA, Component or Composite cable.
KiraFlow
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.
- 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
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‥∴‥∵ Healing Glitter App ∵‥∴‥ Glitter particles flow smoothly on the screen. Tilt and touch the device to enjoy the mysterious movement of particles like ameba or slime. You'll be healed just by looking. ∴ Various glitters ∴ Stars, galaxies, water bubbles, gems, lame, neon, flowers, sand, dot, etc... (Planned to increase in the future) ∴ Twinkle sound effect ∴ A sparkling sound will be heard as the particles move. Please enjoy it with earphones. ∴ Invite a sleep ∴ Watching the smooth movements will calm your mind. It's also perfect for calming down for a while before going to sleep. ∴ For children who like glitter ∴ This app was created to please my daughter (4 years old) who loves princesses and glitter. The mysterious movement of glitter particles will be of interest to children. ・This app is an interactive art work that uses particle-based fluid simulation. ・No need to contact me to introduce this app on your media. News and support: Twitter (@m_hakozaki)
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | fluidity HD | KiraFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (125 ratings) | 4.6 (326 ratings) — better |
| Positive reviews | 73.3% of reviews | 78.2% of reviews — better |
| Number of ratings | 125 | 326 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 24 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | nebulus design | Masataka Hakozaki |
Customer experience
fluidity HD
KiraFlow
User reviews
fluidity HD
From 125 App Store ratingsWhat we love
- 🌈 Visually stunning and mesmerizing
- 🧘♀️ Calming and relaxing experience
- 🎨 Vibrant and customizable colors
- 👍 Great for kids and adults
Room to improve
- 🐛 Crashes and freezes on some devices
- 🔇 Lack of audio/music features
- 💰 Paid version not worth the cost
- 🔋 High battery consumption
KiraFlow
From 326 App Store ratingsWhat we love
- ✨ Beautiful visuals
- 😌 Relaxing and calming
- 🤩 Mesmerizing and satisfying
- 🎶 Pleasant sounds/ASMR
- 👍 Easy to use
Room to improve
- 😩 Too many ads
- 💰 Expensive full version/packs
- 🐌 Slow glitter movement (for some)
- 🚫 Can't save work
- ❌ Laggy performance (for some)
Bugs and requests
fluidity HD
Reported bugs
3 issues- Crashes on double-tap
- Incompatible with newer iOS
- Stuck finger gestures
Requested features
4 requests- Add music/ambient sound options
- Ability to save/export creations
- More customization controls
- Support for latest iOS versions
KiraFlow
Reported bugs
3 issues- No sound issue
- App kicks out on startup
- Not received money taken immediately
Requested features
12 requests- 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
Show 7 moreShow fewer
- Different modes or themes (e.g., glitter on a table)
- Option to set as wallpaper/lock screen
- Option to react to music
- Ability to select multiple fluids simultaneously
- More dark backgrounds or background color adjustment
- Option to adjust glitter amount
- Add clock or pomodoro timer functionality
In-app purchases
fluidity HD
- Full Version Unlock$1.99
KiraFlow
- PACK 001 "TINY"$0.99
- PACK 003 "LAME"$0.99
- PACK 004 "GALAXY"$0.99
Show 11 moreShow fewer
- PACK 005 "PHOTON"$0.99
- PACK 006 "GEM"$0.99
- PACK 007 "BLOOM"$0.99
- PACK 010 "DOT"$0.99
- PACK 011 "NEON"$0.99
- PACK 015 "RAINBOW"$0.99
- PACK 017 "STAR II"$0.99
- PACK 013 "BUBBLE"$0.99
- PACK 008 "HALF"$0.99
- ADS REMOVAL$1.99
- COMPLETE PACK$6.99
