# Fluid Simulation vs Vivid

The clearest difference is review sentiment: Fluid Simulation at 77% against Vivid's 33%. Fluid Simulation also leads on rating (4.6 vs 3.4) and ratings volume (712 vs 10). Vivid's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. Fluid Simulation sells 4 in-app purchases, starting at $4.99 per 7 days. Vivid asks for nothing beyond the download.

Fluid Simulation holds the better App Store score, 4.6 against 3.4. That said, the two scores are not equally well evidenced: Fluid Simulation has 712 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 77% of Fluid Simulation's written reviews are positive against 33% of Vivid's.

Fluid Simulation ships an update weekly, Vivid fortnightly. The most recent releases landed on September 20, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Fluid Simulation | Vivid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (712 ratings)](https://appshunter.io/ios/app/fluid-simulation-magic-fluids/id1555635445/reviews)** | [3.4 (10 ratings)](https://appshunter.io/ios/app/vivid-psychedelic-trip-guide/id6444424430/reviews) |
| Number of ratings | **712** | 10 |
| Positive reviews | **77.4% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 138 MB | 70 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Viacheslav Khakhulin](https://appshunter.io/developer/558806761) | [Know Wealth Inc.](https://appshunter.io/developer/1654638517) |

## What reviewers say

### Fluid Simulation

[App page](https://appshunter.io/ios/app/fluid-simulation-magic-fluids/id1555635445)

Transform your screen into a relaxing oasis with interactive fluid art, mesmerizing particle effects, and calming music. Engage in guided breathing exercises to reduce stress and enhance mindfulness. Customize your experience to create a personal sanctuary for relaxation and creativity.

**Highlights:** Mesmerizing fluid art creation, Dazzling particle and kaleidoscope effects, Soothing ambient music and soundscapes, Guided mindful breathing exercises, Customizable colors, intensity, and speed, Save creations as wallpapers

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |
| Yearly | $29.99 | per year |
| Premium | $34.99 | one-time |

**What reviewers like**

- 🌈 Relaxing and calming effects
- 🎨 Beautiful visuals and fluid dynamics
- 🕰️ Engaging to pass the time
- 🧘‍♀️ Helps with stress relief and meditation

**What reviewers complain about**

- 💰 Excessive ads and paywalls
- 🔌 Issues with app updates and compatibility
- ⏱️ Limited free usage time

**Reported bugs**

- App crashes or freezes after updates
- Notifications and ads causing disruptions

**Requested features**

- Ability to customize the visuals and audio
- Offline mode for use without internet connection
- More ASMR-like features for enhanced relaxation


### Vivid

[App page](https://appshunter.io/ios/app/vivid-psychedelic-trip-guide/id6444424430)

This app helps users document and reflect on their psychedelic experiences to gain mental health benefits. It offers tools for setting intentions, recording thoughts and moods, and analyzing emotional impact.

**Highlights:** Set intentions for psychedelic experiences, Record written and audio thoughts during trips, Secure trip journaling and reflection, Daily mood tracking and analytics, Psychedelic music and visuals, Searchable journal entries

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fluid Simulation free?

Fluid Simulation is free to download, with in-app purchases available.

### Is Vivid free?

Vivid is free to download, with no in-app purchases.

### Which has better reviews, Fluid Simulation or Vivid?

Fluid Simulation is rated higher. Fluid Simulation averages 4.6 out of 5 from 712 ratings, while Vivid averages 3.4 from 10 ratings.

### Do Fluid Simulation or Vivid have ads?

Fluid Simulation shows ads; Vivid does not.

### Which is updated more often, Fluid Simulation or Vivid?

Fluid Simulation ships an update weekly, and Vivid fortnightly. Most recently, Fluid Simulation was updated on September 20, 2026 and Vivid on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*