Comparison

Atomus HD vs Fluids & Particle Simulation

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

Head to head
About

Atomus HD

Experience a premium kinetic universe of light and motion with dynamic, evolving particle structures. This app offers a richer, more immersive visual experience perfect for creative focus, relaxation, or quiet exploration.

Highlights
  • Evolving light and motion structures
  • Richer particle density and flow
  • Smooth 60 FPS rendering
  • 10-finger multi-touch support
  • Adjustable particle settings
  • Multiple color modes
  • Ad-free experience
Features
Read full description

ATOMUS HD — A Premium Kinetic Universe of Light and Motion A deeper, richer, more immersive particle experience. ATOMUS HD is the premium edition of ATOMUS, designed for users who want a more complete visual experience — with richer particle density, smoother movement, and stronger visual immersion. Every touch creates evolving structures of light and motion, forming dynamic patterns that feel alive, hypnotic, and endlessly satisfying. Perfect for creative focus, visual relaxation, quiet moments, or simply watching something extraordinary emerge beneath your fingertips. Premium Dynamic Experience The HD version delivers stronger visual depth and richer particle flow, making every interaction feel more fluid and immersive. Ideal for: • relaxation • creative thinking • sensory focus • visual meditation • quiet exploration Inspired by Living Motion ATOMUS HD creates visual structures inspired by: • fireworks • whirlwinds • auroras • waves • rainbows • atomic forms Every movement generates new patterns that continuously evolve. HD Performance • Richer real-time particle density • Smooth 60 FPS rendering • 10-finger multi-touch support • Adjustable particle size, quantity, and trail length • 3 color modes: Neon, Crystal, Nature • Built-in music by Aden Ray (optional) Why Choose HD • Completely ad-free • Higher visual richness • Stronger immersion • Premium uninterrupted experience Support If you have ideas, questions, or feedback, I would love to hear from you. sunglab@gmail.com www.sunglab.com

About

Fluids & Particle Simulation

Create mesmerizing, psychedelic fluid art with your fingertips. This app offers a calming and creative outlet to reduce stress and channel negative emotions into beautiful, flowing patterns. Enjoy a unique ASMR experience with sound-reactive visuals and customizable parameters.

Highlights
  • Interactive fluid art simulation
  • Sound-reactive fluids
  • Dozens of customizable parameters
  • Autopilot mode
  • Gyrosensor and haptic feedback integration
  • Real-time sound synthesis
  • Video recording and screenshot functionality
Read full description

Are you stressed and agitated? Do you want to channel your negative energies into something soulful and creatively free till you feel calm? The Fluids and Sounds app can help you - create satisfying, trippy and psychedelic art with your fingertips. This app helps you to reduce stress and calm down. Now you can touch on your screen to simulate colorful and luminescent fluids that flow with your touch movements. Create extraordinary patterns with single touch or multiple touches on the screen and delve deeper into a world of creative fascination and magical freedom till you feel the connection to our universe. --- Features of Fluids and Sounds --- - Wonderful and easy fluid art simulation - Sound reactive fluids (synchronize to your favorite music) - Dozens of parameters to play around with (color, bloom, sunrays, resolution, force and more) - Autopilot included. Let the fluids flow without interacting with the app. You also could stream this to a bigger screen using AirPlay. Please note: Autopilot is not generating sounds. - Gyrosensor, haptic feedback and force touch are integrated (if you want to use them) - Realtime sound synthesis for meditating music - Take screenshots and share them with anyone you like - Record videos of your fluids (please note: Videos are not including the fluid sounds, only the background music, also video recording excludes the UI, so you'll only record what matters - your art) - Save and load your favorite settings using presets --- Feel Free, Calm and Relaxed --- Art is a form of expression and expression helps in catharsis of inexplicable things we feel every day. If you think you suck at art or expression, this app offers you a safe, easy and creative outlet to channel your thoughts into wonderful art impressions that disappear intermittently. Allow yourself to come down and play around with Fluids & Shapes for some minutes to make beautiful expressions on your device’s screen. --- Seek Awareness and Peace --- You feel like the world is too overwhelming and you need to get a bit of awareness? Protect your peace from getting drowned in a pool of negative emotions such as stress, anxiety, agitation, depression etc. Seek awareness and peace the minute you open this app and make the most of your free time with this free, amazing app. --- Create Wonderful Fluid Art Impressions --- Use your fingertips to create wonderful forms and shapes on your device. While you do so, you can listen to relaxing music which is generated in realtime, depending on your input. Get in tune with the relaxing art and music as you make beautiful patterns on your screen. Customize the intensity, color dispersion, vortex index, music effects, waves and other items from the menu to enjoy a more personalized fluid art meditation and relaxation. Are you ready to feel the satisfaction of creative freedom and its impact on your mental wellbeing? The new fluid art meditation and stimulation app is here for you. Enjoy breathtaking art patterns and soulful music till you feel calm and relaxed. Download and use Fluids and Sounds today! Hope you'll enjoy, because we believe you deserve to feel calm and relaxed! Do you have ideas for new features or improvements? You are not satisfied with this app? Feel free to send me a message at info@mkgames.org Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Atomus HD4 screens
Fluids & Particle Simulation4 screens

Verdict

The call

The clearest difference is price: Fluids & Particle Simulation at Free against Atomus HD's $1.99. Fluids & Particle Simulation also leads on update cadence (monthly vs every 3 months) and ratings volume (770 vs 60). Atomus HD's advantage is in-app purchases (none vs 8). On rating, review sentiment, ads 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

Fluids & Particle Simulation is free to download; Atomus HD costs $1.99 up front. Fluids & Particle Simulation sells 8 in-app purchases, starting at $2.99 per 7 days. Atomus HD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Atomus HD against 4.7 for Fluids & Particle Simulation. That said, the two scores are not equally well evidenced: Fluids & Particle Simulation has 770 ratings behind it against 60, so its average is the more settled of the two. Written reviews are what separate them: 91% of Atomus HD's written reviews are positive against 90% of Fluids & Particle Simulation's.

UpkeepUpdate frequency

Atomus HD ships an update every 3 months, Fluids & Particle Simulation monthly. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
Atomus HD versus Fluids & Particle Simulation: the parameters behind the verdict, then further details
ParameterAtomus HDFluids & Particle Simulation
Price$1.99Free — better
Rating4.8 (60 ratings) — better4.7 (770 ratings)
Positive reviews90.7% of reviews — better89.6% of reviews
Number of ratings60770 — better
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.613.0 — better
Further details — not scored
Size63 MB189 MB
Age rating4+4+
DeveloperSungLab IncZipoApps

Customer experience

Atomus HD

All ratings60 ratings
Positive98.3%
Neutral1.7%
Negative0.0%
Written reviews161 reviews
Positive90.7%
Neutral3.7%
Negative5.6%

Fluids & Particle Simulation

All ratings770 ratings
Positive94.2%
Neutral2.9%
Negative3.0%
Written reviews125 reviews
Positive89.6%
Neutral4.0%
Negative6.4%

User reviews

Atomus HD

From 60 App Store ratings

What we love

  • ✨ Visually stunning graphics
  • 🧘‍♀️ Relaxing and calming experience
  • 🎨 Creative and mesmerizing visuals
  • 🎶 Beautiful and soothing music
  • 🎮 Addictive and engaging gameplay

Room to improve

  • ⏳ Can become boring after a while
  • ❓ Lack of user manual/explanations
  • 🎶 Music can be repetitive
  • 💸 Some users feel it's a waste of money
  • 🎛️ Limited customization options

Fluids & Particle Simulation

From 770 App Store ratings

What we love

  • 🚀 Mesmerizing visuals
  • 👍 Relaxing and calming experience
  • 🎨 Customizable color and fluid effects
  • 🎶 Enjoyable audio/music integration
  • 💡 Innovative and creative app concept

Room to improve

  • 🐛 Occasional crashes or bugs
  • 🔋 Device overheating issues
  • 💰 Paid features may be too expensive
  • 🔇 Lack of volume/audio control options

Bugs and requests

Atomus HD

Reported bugs

8 issues
  • App crashes with 11 fingers
  • Orientation issues on tablets
  • Music not working
  • Sound stopped working
  • App freezes after opening and exiting
Show 3 more
  • App crashes with more than 9 fingers
  • App crashes with more than 10 fingers
  • App crashes with multiple fingers

Requested features

10 requests
  • User manual or explanations
  • Ability to customize starting points
  • Option to record or save favorite settings
  • Ability to take screenshots
  • More music tracks/playlists
Show 5 more
  • Ability to play animation via Apple TV
  • Add more themes
  • Implement speed control
  • Option to capture images or short videos
  • Add more colors and particle formation modes

Fluids & Particle Simulation

Reported bugs

2 issues
  • Microphone input not working as expected
  • Difficulty resetting or restoring default settings

Requested features

4 requests
  • Ability to sync visuals with external audio/music
  • More preset options and visual effects
  • Improved UI/UX for settings and controls
  • Support for casting to external displays

In-app purchases

None

Atomus HD

No in-app purchases

8 purchases

Fluids & Particle Simulation

Subscriptions3
  • Unlock all features3 Days trial$2.997 Days
  • Unlock all | monthly premium$5.991 Month
  • Fluids PRO$17.991 Year
One-time5
  • Unlock all Presets (iOS)$1.99
  • Unlock all Presets (OS X Mac)$2.99
  • Unlock all features$14.99
Show 2 more
  • Psychedelic magic (OS X Mac)$24.99
  • Psychedelic magic (iOS)$44.99

Questions

Is Atomus HD free?
Atomus HD costs $1.99, with no in-app purchases.
Is Fluids & Particle Simulation free?
Fluids & Particle Simulation is free to download, with in-app purchases available.
Which has better reviews, Atomus HD or Fluids & Particle Simulation?
Atomus HD is rated higher. Atomus HD averages 4.8 out of 5 from 60 ratings, while Fluids & Particle Simulation averages 4.7 from 770 ratings.
Do Atomus HD or Fluids & Particle Simulation have ads?
Neither Atomus HD nor Fluids & Particle Simulation shows ads.
Which is updated more often, Atomus HD or Fluids & Particle Simulation?
Atomus HD ships an update every 3 months, and Fluids & Particle Simulation monthly. Most recently, Atomus HD was updated on October 14, 2026 and Fluids & Particle Simulation on October 7, 2026.

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