Comparison

Fluid Simulation vs 3D Hourglass Timer

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

Head to head
About

Fluid Simulation

Engage with mesmerizing fluid dynamics simulations on your device. This app offers a visually stunning and calming experience, perfect for stress relief and relaxation. Explore swirling liquids and gases with simple touch controls.

Highlights
  • Interactive fluid dynamics
  • Stress relief and calming experience
  • Gorgeous visuals
  • Simple touch controls
  • Liquid, gas, and water simulation
  • Psychedelic and trippy visuals
Features
Read full description

Bored or anxious? This dreamy app will make you feel good and alright. Manifest beauty with a touch of your lovely fingers. Flow with these swirling substances. Gorgeously calm visuals will conquer your soul and bring you to Heaven. This beautiful creation will help everyone to stay calm and relieve this pesky anxiety from all minds. Like a magic lighter it will burn negative forces, created by sandbox mind. When you first launch it you're gonna be frozen by beauty, that beyond spectrum magnificence, that you have never ever seen before. Believe it or not, you'll become happy playing it, squeezing every second from it, to experience love and connection to our big dreamy Universe. Is it not yet convincing for you? Then you are the type of soul that this lovely app is made for. It's going to reassure your grumpiness, and you'll become enjoyably hot candle to be flowing with. Also show it to your kids, they're gonna like it. So what are you waiting for? Stop reading this and play it. You may ask how this lovely creation works and I can say it works by forces of magic. Our Universe works by principles of emergence, small physical thoughts make all life possible. This fire app simulates smoke, lighter and good vibrations. This is a liquid water simulation of calm fluid life. The real antistress app that manifests your fire dreams. Watch out for your colorful swipes. Feel the flow. Become an enlightened soul. You should really stop reading this and install the app instead. Get a fresh dose of fluids to your mind! Just stop already! Do it! Discord: https://discord.gg/CeqZDDE Twitter: https://twitter.com/PavelDoGreat Instagram: https://instagram.com/paveldogreat Terms of Use: https://paveldogreat.games/terms-fluid-simulation Privacy Policy: https://paveldogreat.games/privacy-fluid-simulation

About

3D Hourglass Timer

Experience a moment of luxury and tranquility with a beautifully designed app featuring 3D hourglasses. Enhance meditation, relaxation, and focus with customizable timers, soothing sounds, and calming music.

Highlights
  • Beautifully designed 3D hourglasses
  • 360° sand flow visualization
  • Timer from 1 to 180 minutes
  • Soothing sand and background sounds
  • Focus-boosting study timer
  • Elegant and luxurious design
Features
Read full description

Escape the hustle and bustle of daily life and enjoy a blissful reset for your mind and body. 3D Hourglass HD is a beautifully designed app featuring six stunning hourglasses, rendered with sophisticated 3D graphics. Enjoy the mesmerizing flow of sand from any angle in 360°, creating a perfect atmosphere for meditation, relaxation, and mindfulness practice. With a timer function ranging from 1 to 180 minutes, soothing sand sounds, and calming background music (or rain sounds), this app enhances your precious moments of tranquility. It also serves as a focus-boosting study timer, supporting productivity and relaxation. Designed with luxury and elegance in mind, 3D Hourglass HD brings a touch of refinement to your daily routine. Recommended for: - Those who practice meditation and mindfulness to find inner balance - Those seeking moments of relaxation and reset in their busy lives - Students and professionals looking for a stylish timer to improve focus during study or work - Those who appreciate elegant design and wish to create a premium relaxation space - Those who want to relieve stress and refresh their mind and body Enhance your daily life with a touch of ultimate relaxation and improved focus. Terms of Use: https://hosono-note15.web.app/policy/terms_en.html Privacy Policy: https://hosono-note15.web.app/policy/privacy_en.html

Screenshots

Fluid Simulation4 screens
3D Hourglass Timer4 screens

Verdict

The call

The clearest difference is ads: 3D Hourglass Timer at none against Fluid Simulation's shown. Fluid Simulation's advantage is update cadence (daily vs every 6 weeks) and ratings volume (90K vs 30). On price, rating, in-app purchases and monetization model 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

Both are free to download. Fluid Simulation sells 15 in-app purchases, starting at $1.00 per 7 days and 3D Hourglass Timer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Fluid Simulation against 4.7 for 3D Hourglass Timer. That said, the two scores are not equally well evidenced: Fluid Simulation has 90K ratings behind it against 30, so its average is the more settled of the two. Written reviews are what separate them: 96% of Fluid Simulation's written reviews are positive against 73% of 3D Hourglass Timer's.

UpkeepUpdate frequency

Fluid Simulation ships an update daily, 3D Hourglass Timer every 6 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Fluid Simulation versus 3D Hourglass Timer: the parameters behind the verdict, then further details
ParameterFluid Simulation3D Hourglass Timer
PriceFreeFree
Rating4.9 (90K ratings) — better4.7 (30 ratings)
Positive reviews96.2% of reviews — better72.7% of reviews
Number of ratings90K — better30
Update frequencyDaily — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size69 MB177 MB
Age rating4+4+
DeveloperPavel DobryakovKyohei Hosono

Customer experience

Fluid Simulation

All ratings90,149 ratings
Positive97.7%
Neutral1.2%
Negative1.1%
Written reviews4,205 reviews
Positive96.2%
Neutral1.6%
Negative2.1%

3D Hourglass Timer

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews11 reviews
Positive72.7%
Neutral0.0%
Negative27.3%

Bugs and requests

Fluid Simulation

Reported bugs

2 issues
  • Subscription issues and inability to access premium features
  • Crashes or freezes when changing certain settings

Requested features

5 requests
  • Ability to save and share custom presets
  • Option to change background color
  • Slower animation speed for more control
  • Integration with music or audio playback
  • Support for larger screens and TVs

3D Hourglass Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

15 purchases

Fluid Simulation

Subscriptions5
  • Fluid Premium3 Days trial$1.007 Days
  • Fluid Premium1 Month trial$3.001 Month
  • Premium3 Days trial$4.991 Year
Show 2 more
  • Fluid Premium1 Month trial$6.001 Month
  • Fluid Premium1 Month trial$10.001 Year
One-time10
  • Premium$0.49
  • Particles$0.99
  • Particles$1.99
Show 7 more
  • Fluid Premium$3.00
  • Fluid Simulation$3.69
  • Fluid Premium$20.00
  • Fluid Simulation$23.00
  • Discount$29.99
  • Fluid Premium$30.00
  • Fluid Simulation$33.00
2 purchases

3D Hourglass Timer

One-time2
  • Moon Timer$1.99
  • Jellyfish Hourglass$1.99

Questions

Is Fluid Simulation free?
Fluid Simulation is free to download, with in-app purchases available.
Is 3D Hourglass Timer free?
3D Hourglass Timer is free to download, with in-app purchases available.
Which has better reviews, Fluid Simulation or 3D Hourglass Timer?
Fluid Simulation is rated higher. Fluid Simulation averages 4.9 out of 5 from 90K ratings, while 3D Hourglass Timer averages 4.7 from 30 ratings.
Do Fluid Simulation or 3D Hourglass Timer have ads?
Fluid Simulation shows ads; 3D Hourglass Timer does not.
Which is updated more often, Fluid Simulation or 3D Hourglass Timer?
Fluid Simulation ships an update daily, and 3D Hourglass Timer every 6 weeks. Most recently, Fluid Simulation was updated on October 25, 2026 and 3D Hourglass Timer on October 24, 2026.

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