Comparison

Fluid Simulation vs Sloth Rate

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

Sloth Rate

This app interprets your daily step count by applying unique human-to-sloth algorithms. It provides humorous summaries of your activity levels and allows you to review past data through a calendar feature. Embrace a less serious approach to your fitness tracking.

Highlights
  • Connects to Health data
  • Analyzes daily step count
  • Human-to-sloth interpretation
  • Funny activity summaries
  • Calendar for past data
Features
Read full description

Imagine you were a sloth, but your iPhone still counted your steps every day. What would those numbers mean to you? Sloth Rate is the right app to provide you with those vital answers. What exactly does it do: - Connects to your Health data - Analyses your daily number of steps taken - Applies human-to-sloth algorithms to interpret the data - Provides you with a funny summary of your activity levels The Calendar feature lets you go back to any date to see your Sloth Rate for that day. Remember to be less serious on a regular basis :) Have fun!

Screenshots

Fluid Simulation4 screens
Sloth Rate3 screens

Verdict

The call

The clearest difference is review sentiment: Fluid Simulation at 96% against Sloth Rate's 50%. Fluid Simulation also leads on rating (4.9 vs 3.8) and update cadence (daily vs every 12 months). Sloth Rate's advantage is in-app purchases (none vs 15) and ads (none vs shown). On price, 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

Both are free to download. Fluid Simulation sells 15 in-app purchases, starting at $1.00 per 7 days. Sloth Rate asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fluid Simulation holds the better App Store score, 4.9 against 3.8. That said, the two scores are not equally well evidenced: Fluid Simulation has 90K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 96% of Fluid Simulation's written reviews are positive against 50% of Sloth Rate's.

UpkeepUpdate frequency

Fluid Simulation ships an update daily, Sloth Rate every 12 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

Scorecard7 real differences · 3 level
Fluid Simulation versus Sloth Rate: the parameters behind the verdict, then further details
ParameterFluid SimulationSloth Rate
PriceFreeFree
Rating4.9 (90K ratings) — better3.8 (4 ratings)
Positive reviews96.2% of reviews — better50.0% of reviews
Number of ratings90K — better4
Update frequencyDaily — betterEvery 12 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size69 MB2 MB
Age rating4+4+
DeveloperPavel DobryakovPolina Portova

Customer experience

Fluid Simulation

All ratings90,068 ratings
Positive97.7%
Neutral1.2%
Negative1.1%
Written reviews4,188 reviews
Positive96.2%
Neutral1.6%
Negative2.1%

Sloth Rate

All ratings4 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

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

Sloth Rate

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
None

Sloth Rate

No in-app purchases

Questions

Is Fluid Simulation free?
Fluid Simulation is free to download, with in-app purchases available.
Is Sloth Rate free?
Sloth Rate is free to download, with no in-app purchases.
Which has better reviews, Fluid Simulation or Sloth Rate?
Fluid Simulation is rated higher. Fluid Simulation averages 4.9 out of 5 from 90K ratings, while Sloth Rate averages 3.8 from 4 ratings.
Do Fluid Simulation or Sloth Rate have ads?
Fluid Simulation shows ads; Sloth Rate does not.
Which is updated more often, Fluid Simulation or Sloth Rate?
Fluid Simulation ships an update daily, and Sloth Rate every 12 months. Most recently, Fluid Simulation was updated on October 20, 2026 and Sloth Rate on October 6, 2026.

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