Comparison

Pond Koi 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

Pond Koi

Create a serene digital pond with swimming koi, customizable backgrounds, and natural soundscapes. Interact with the fish, add flowers, and enjoy a stress-relieving visual and auditory experience.

Highlights
  • Realistic koi fish simulation
  • Customizable pond backgrounds
  • Interactive fish feeding and teasing
  • Variety of natural sound effects
  • Flower and leaf arrangement
  • Realistic water splashes and ripples
Features
Read full description

Enjoy the aesthetic beauty of koi and the playful charm of a realistic lotus pond. The koi pond is filled with beautiful, carefree fish—plump, adorable, and full of life. It’s the perfect place to pause, soothe your weary mind and body, and lift your spirits. You can watch and play with the beautiful fish—feed them, tease them, ripple the water to stir them up, and interact with them in various ways. Admire a variety of flowers and foliage. Use the diverse range of decorative elements—not just for show, but for interactive fun: click and drag to place shapes, and choose between flowing or static special effects. Play with the water; experience incredibly realistic splashes and perfect 3D effects that showcase the true nature of water. Switch between various built-in sound effects (including domestic pets, wildlife, birds, whales, insects, frogs, nature sounds, ambient mixes, flowing water, weather sounds, artificial noises, and more—with a rich and growing library). You can also play your own favorite music. Change the background or use your own photos and images to customize the pond's setting. Mix and match elements—flowers, leaves, feathers, and more—with built-in or custom backgrounds and sounds to create your own unique lotus pond scene. Combine koi with nature sounds and music. Play nature sounds or music individually, or mix them together for a harmonious blend. Enjoy the dual pleasure of listening to music while watching and playing with the beautiful fish. It brings joy and relaxation during your downtime, aiding in rest, sleep, exercise, quiet reflection, meditation, or even a quick, soothing break at work. It is also perfect for children; they can play in this beautiful pond while learning about various adorable animals—let these cute creatures grow alongside your little ones! The animal family keeps growing, as they love your little ones too. Stunningly beautiful, realistic, and fun for all ages—easy to pick up and play instantly, with no complex setup required. Make your setup truly unique—a real head-turner that will be the envy of everyone around you. You can even take screenshots and record videos to show off your luxurious koi pond on social media, displaying just how well you’ve raised these beautiful, chubby, and adorable fish! They’re delightful to look at and fun to play with—but remember, they aren't for eating! Made up your mind? Great! Then don't wait— Download it now and dive in! Come and explore the beautiful, realistic world created just for you! Feel free to contact us anytime if you need anything. Wishing you lots of joy! Contact email: puke365@163.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

Pond Koi4 screens
Fluids & Particle Simulation4 screens

Verdict

The call

The clearest difference is review sentiment: Fluids & Particle Simulation at 90% against Pond Koi's 31%. Fluids & Particle Simulation also leads on price (Free vs $2.99) and rating (4.7 vs 3.1). Pond Koi's advantage is in-app purchases (none vs 8) and chart position (#180 vs unranked). On update cadence, ads, device support and iOS requirement 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; Pond Koi costs $2.99 up front. Fluids & Particle Simulation sells 8 in-app purchases, starting at $2.99 per 7 days. Pond Koi asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fluids & Particle Simulation holds the better App Store score, 4.7 against 3.1. That said, the two scores are not equally well evidenced: Fluids & Particle Simulation has 770 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 31% of Pond Koi's written reviews are positive against 90% of Fluids & Particle Simulation's.

UpkeepUpdate frequency

Pond Koi ships an update every 2 months, Fluids & Particle Simulation monthly. The most recent releases landed on September 6, 2026 and August 16, 2026 respectively.

Scorecard7 real differences · 4 level
Pond Koi versus Fluids & Particle Simulation: the parameters behind the verdict, then further details
ParameterPond KoiFluids & Particle Simulation
Price$2.99Free — better
Rating3.1 (16 ratings)4.7 (770 ratings) — better
Positive reviews30.8% of reviews89.6% of reviews — better
Number of ratings16770 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#180 — better—
DevicesiPhone, iPad, iPod, Mac, Apple TV — betteriPhone, iPad, iPod, Mac
Requires iOS12.0 — better13.0
Further details — not scored
Size228 MB189 MB
Age rating4+4+
Developer荣辉 张ZipoApps

Customer experience

Pond Koi

All ratings16 ratings
Positive43.8%
Neutral12.5%
Negative43.8%
Written reviews13 reviews
Positive30.8%
Neutral15.4%
Negative53.8%

Fluids & Particle Simulation

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

Bugs and requests

Pond Koi

Not enough reviews yet to summarise bugs or requests.

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

Pond Koi

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 Pond Koi free?
Pond Koi costs $2.99, 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, Pond Koi or Fluids & Particle Simulation?
Fluids & Particle Simulation is rated higher. Pond Koi averages 3.1 out of 5 from 16 ratings, while Fluids & Particle Simulation averages 4.7 from 770 ratings.
Do Pond Koi or Fluids & Particle Simulation have ads?
Neither Pond Koi nor Fluids & Particle Simulation shows ads.
Which is updated more often, Pond Koi or Fluids & Particle Simulation?
Pond Koi ships an update every 2 months, and Fluids & Particle Simulation monthly. Most recently, Pond Koi was updated on September 6, 2026 and Fluids & Particle Simulation on August 16, 2026.

Other comparisons