Comparison

Rootd vs Fluid Simulation

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

Head to head
About

Rootd

This app offers immediate and long-term relief from anxiety and panic attacks. It provides tools like a panic button, guided breathing, journaling, and educational lessons to help users understand and overcome their anxiety. Features also include soothing visualizations, sleep aids, and an emergency contact option.

Highlights
  • Panic attack SOS button
  • Guided deep breathing exercises
  • Anxiety journaling
  • Soothing visualizations
  • Educational lessons on anxiety
  • Sleep aids and relaxing sounds
  • Emergency contact feature
Features
Read full description

** Editor's Choice ** — Apple ** App of the Day ** — Apple ** Approved for privacy, security, clinical assurance, and safety ** — DHAF & ORCHA Rootd is anxiety and panic attack relief in your pocket. Award-winning, scientifically validated, female led and seen in Women's Health, Time Magazine, Healthline and more. With millions of users worldwide, Rootd is the go-to app for anxiety & panic attacks for more and more people each day. “I’ve suffered from panic attacks for almost 10 years. I’ve done CBT, medication, meditation, but nothing helped me in the moment when that panic attack hit, until I downloaded Rootd. Rootd makes it feel like someone is with me, even when I’m alone. I owe my continued stability to this simple genius app. It's a MUST for all who are facing the same type of war.” RainyNally Understand, and overcome anxiety & panic attacks with Rootd’s therapist-approved panic button, guided deep breathing, anxiety journal, soothing visualizations, stats page, emergency contact, and lessons. We set out to build Rootd after suffering from panic attacks and anxiety for several years. The only help we could find was either too expensive, ineffective, or poorly designed. Our mission is to help others find accessible relief from their panic and anxiety, and to end the stigma against those affected. Finally, an app for conquering panic attacks and anxiety that blends a guided process for both immediate and long term relief, with clean and engaging design. Rootd’s core features and content include: THE ROOTR, PANIC ATTACK SOS BUTTON A panic button to bring a swift end to panic attacks based on the latest techniques in Cognitive Behavioural Therapy (CBT). LESSONS Find some peace of mind by learning about where anxiety comes from, how our bodies and minds experience panic attacks, and why this all might be happening to you. BREATHE The perfect tool to practice deep breathing daily and find calm during times of stress. JOURNAL Track and identify moods, habits, and subconscious triggers of anxiety and panic attacks. VISUALIZE Guided body scans, visualizations, ASMR, and nature sounds to get rooted when feeling anxious. SLEEP White noise, ASMR, sleep stories, relaxing sounds, and music for you to gain calm and sleep deeply. EMERGENCY CONTACT For when you need to hear a friendly voice, you can immediately call a friend, family member, or nearby help center directly from the app. PERSONAL STATS Take pride in your healing progress and gain appreciation for how far you’ve come. To continue your journey, you can upgrade to unlock Full Access to Rootd, including: MORE LESSONS Learn changes you can make and exercises you can perform to guide you through the remainder of the journey to lifelong relief and to living panic attack free. Rootd saves your Breathe, Visualize, and Sleep sessions to your Apple Health app. Subscription Pricing and Terms Get full access to all Rootd's content and features by purchasing a monthly or yearly auto-renewing Full Access subscription. Or get lifetime full access for a one-time payment. Pricing may vary by country. Payment will be charged to your iTunes Account at confirmation of purchase. Your Rootd subscription will automatically renew at the end of each term and your credit card will be charged through your iTunes account unless auto-renew is turned off at least 24-hours before the end of the current period. Subscriptions may be managed and auto-renewal turned off any time from your iTunes Account Settings after purchase. “I appreciate the simple, factual, and yet caring approach of Rootd that makes it an inviting, interesting, and easy to use tool. I endorse this for individuals looking for support and tools for managing anxiety and panic attacks.” Wendy Marion-Orienti - Licensed PRH counsellor Terms: https://www.rootd.io/terms-conditions Privacy Policy: https://www.rootd.io/privacy-policy

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

Screenshots

Rootd4 screens
Fluid Simulation4 screens

Verdict

The call

The clearest difference is update cadence: Fluid Simulation at every 2 days against Rootd's weekly. Fluid Simulation also leads on review sentiment (96% vs 82%) and ratings volume (90K vs 11K). On price, rating, ads and in-app purchases 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. Rootd sells 11 in-app purchases, starting at $2.99 per month and Fluid Simulation sells 15 in-app purchases, starting at $1.00 per 7 days. 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 — 4.8 for Rootd against 4.9 for Fluid Simulation. That said, the two scores are not equally well evidenced: Fluid Simulation has 90K ratings behind it against 11K, so its average is the more settled of the two. Written reviews are what separate them: 82% of Rootd's written reviews are positive against 96% of Fluid Simulation's.

UpkeepUpdate frequency

Rootd ships an update weekly, Fluid Simulation every 2 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Rootd versus Fluid Simulation: the parameters behind the verdict, then further details
ParameterRootdFluid Simulation
PriceFreeFree
Rating4.8 (11K ratings)4.9 (90K ratings) — better
Positive reviews82.2% of reviews96.2% of reviews — better
Number of ratings11K90K — better
Update frequencyWeeklyEvery 2 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size150 MB70 MB
Age rating4+4+
DeveloperSimply Rooted Media Inc.Pavel Dobryakov

Customer experience

Rootd

All ratings10,537 ratings
Positive96.4%
Neutral2.1%
Negative1.5%
Written reviews556 reviews
Positive82.2%
Neutral4.3%
Negative13.5%

Fluid Simulation

All ratings90,173 ratings
Positive97.7%
Neutral1.2%
Negative1.1%
Written reviews4,205 reviews
Positive96.2%
Neutral1.6%
Negative2.1%

User reviews

Rootd

From 11K App Store ratings

What we love

  • 💗 Helps with anxiety and panic attacks
  • 🧘‍♀️ Useful breathing and relaxation exercises
  • 📚 Informative lessons on understanding anxiety
  • 🆓 Provides helpful free features
  • 🔒 No ads or distractions

Room to improve

  • 💰 Paid features can be expensive
  • 🐛 Some technical issues like app crashes
  • 🚫 Limited free content, need to pay for full access
  • 🤖 Voice/audio quality could be improved
  • 🤔 Certain features not always reliable during panic attacks

Fluid Simulation

From 90K App Store ratings

What we love

  • 🌈 Beautiful and mesmerizing visuals
  • 🧘‍♀️ Calming and relaxing experience
  • 👍 Intuitive and easy to use
  • 🎨 Customizable settings and presets
  • ⭐️ High-quality graphics and animations

Room to improve

  • 💰 Premium features locked behind paywall
  • 🔒 Limited customization options in free version
  • 🐛 Occasional crashes or performance issues
  • 📱 Smaller screen size can make controls tricky

Bugs and requests

Rootd

Reported bugs

3 issues
  • App crashes or freezes on launch
  • Certain features not functioning as expected
  • Syncing/login issues with paid subscriptions

Requested features

5 requests
  • More free content and exercises
  • Ability to customize/personalize the app
  • Integration with wearables or smart home devices
  • Expanded journaling and mood tracking capabilities
  • Games or interactive elements to distract during anxiety

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

In-app purchases

11 purchases

Rootd

Subscriptions10
  • Chat With Ron$2.991 Month
  • Rootd Full Access Monthly$6.991 Month
  • Unlimited Annual Access7 Days trial$29.991 Year
Show 7 more
  • Rootd Full Access 6 Months$34.996 Months
  • Rootd Full Access Yearly3 Days trial$44.991 Year
  • Rootd Full Access Yearly$59.991 Year
  • 7 Day Trial Yearly Plan7 Days trial$59.991 Year
  • Rootd Full Access Yearly3 Days trial$59.991 Year
  • Rootd Full Access Yearly$79.991 Year
  • Rootd Full Access Yearly7 Days trial$79.991 Year
One-time1
  • Rootd Lifetime Full Access$179.99
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

Questions

Is Rootd free?
Rootd is free to download, with in-app purchases available.
Is Fluid Simulation free?
Fluid Simulation is free to download, with in-app purchases available.
Which has better reviews, Rootd or Fluid Simulation?
Fluid Simulation is rated higher. Rootd averages 4.8 out of 5 from 11K ratings, while Fluid Simulation averages 4.9 from 90K ratings.
Do Rootd or Fluid Simulation have ads?
Both Rootd and Fluid Simulation show ads.
Which is updated more often, Rootd or Fluid Simulation?
Rootd ships an update weekly, and Fluid Simulation every 2 days. Most recently, Rootd was updated on October 27, 2026 and Fluid Simulation on October 28, 2026.

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