# Physarum - Slime Mold — Emergent Natural Intelligence

> Slime mold simulation app demonstrating emergent natural intelligence and complex pattern formation. (iPhone/iPad app by GEORGY OSTROBROD.)

- Source: https://appshunter.io/ios/app/physarum-slime-mold/id6744574947 (this page in markdown: same URL + `.md`)
- Developer: [GEORGY OSTROBROD](https://appshunter.io/developer/1875865758)
- Category: Education, Entertainment
- Price: Free with in-app purchases
- Rating: 4.78/5 from 27 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 32 MB
- Languages: English, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Russian, Chinese and 1 more
- Released: 2025-04-27
- Data updated: 2026-08-30
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/physarum-slime-mold/id6744574947/reviews.md

## What is Physarum?

Explore artificial life through a living, flowing simulation inspired by Physarum polycephalum, the slime mold famous for forming networks, solving paths, and showing intelligence without a brain.

Physarum turns simple local rules into complex motion. Thousands of agents sense trails, turn, move, and deposit new traces. As the field evolves, branching networks, waves, and organic textures emerge in real time.

Use Physarum to:
- Tune sensor distance, turn angle, movement, and trail strength
- Paint into the field and guide the simulation by touch
- Explore chaotic, branching, and self-organizing patterns
- Save and restore interesting agents, fields, and rules
- Create vivid generative visuals with color controls

It is part science toy, part generative art studio, and part meditative visual instrument. Whether you study emergent systems, teach artificial life, or simply enjoy hypnotic motion, Physarum gives you a hands-on way to watch complexity grow from simple behavior.

## Key features

- Slime mold behavior simulation
- Autonomous agent control
- Adjustable agent parameters
- Maze solving and network formation
- Vibrant color modes
- Interactive system manipulation

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Medium developer tip | $3.99 | one-time |
| Small developer tip | $1.99 | one-time |
| Medium developer tip | $3.99 | one-time |
| Big developer tip | $5.99 | one-time |
| Small developer tip | $1.99 | one-time |
| Big developer tip | $5.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/physarum-slime-mold/id6744574947/reviews.md

### 4/5 — The paint tool doesn’t work please fix it

*2026-07-04*

It won’t let me place agents

**Developer response:** Thank you for your feedback. The fix is already done and waits for review!

### 5/5 — Tesselations screen grab?

*2026-04-07*

I get the impression the whole image area tiles the plane if I’m correct I don’t see an easy way to get a screen grab without all the little icons??? that would be a great new feature? unless it’s a quadruple tap or something.

**Developer response:** Hi! Thank you for your request. Now you can only minimize these menus, but you’ll still have bottom icons. I’ll put the feature to my priority list

### 5/5 — Chicken Guy

*2026-01-05*

Absolutely cinema

**Developer response:** Thanks!

## Frequently asked questions about Physarum

### What is Physarum based on?

Physarum is a simulation inspired by the real-life slime mold Physarum polycephalum, known for its decentralized intelligence and ability to form complex networks and solve mazes.

### How does Physarum work?

The app uses thousands of autonomous agents that model simple behaviors like sensing pheromone trails, steering, and leaving trails, leading to the creation of continuously evolving, complex patterns.

### Can I customize the simulation in Physarum?

Yes, you can adjust agent parameters such as sensor range, angles, movement speed, and trail strength to explore different behaviors and patterns.

### What kind of patterns can I expect to see in Physarum?

You can observe chaotic, branching, or self-organizing behaviors. The app allows you to save and restore interesting formations and visualize trails using vibrant color modes.

### Is Physarum suitable for children?

Physarum has an age rating of 4+, making it suitable for younger users interested in exploring scientific concepts through interactive visuals.

### How often is Physarum updated?

The app was last updated on January 14, 2026, indicating a commitment to ongoing development and improvements.

### What devices support Physarum?

Physarum is available on both iPhone and iPad, offering a consistent experience across Apple mobile devices.

### Does Physarum have ads?

No, Physarum does not contain advertisements, providing an uninterrupted simulation experience.

## Version history (last 5 releases)

### 1.5.2 — 2026-07-05

Physarum 1.5.0 adds more app localizations, plus fixes and improvements for a smoother simulation experience.

### 1.4.1 — 2026-01-14

- New painting tools
- Other fixes and improvements

### 1.4.0 — 2026-01-13

- New painting tools
- Other fixes and improvements

### 1.3.1 — 2025-12-08

- Cross references between sandboxes - now you can find something interesting much easier (see in settings)
- Minor fixes and improvements

### 1.3.0 — 2025-10-04

- Brighter colors (P3 support)
- Added support of iOS 26 Liquid Glass UI
- Dropped iOS versions below iOS 26
- Other fixes and improvements

## Apps similar to Physarum

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Melt & Freeze](https://appshunter.io/ios/app/melt-and-freeze/id6670792050) | — | Free | Education |
| [Atomizer AR: Quantum Chemistry](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706) | 4.0 (3) | Free | Education |
| [Loughborough Wave Lab](https://appshunter.io/ios/app/loughborough-wave-lab/id402424695) | 4.5 (13) | Free | Education |
| [Framsticks Artificial Life](https://appshunter.io/ios/app/framsticks-artificial-life/id1187400787) | 4.4 (5) | Free | Education |
| [Epicycles](https://appshunter.io/ios/app/epicycles/id6450433959) | 5.0 (2) | Free | Education |
| [Chaos Lab](https://appshunter.io/ios/app/chaos-lab/id398270047) | 4.9 (7) | Free | Education |

## More apps by GEORGY OSTROBROD

- [Tiamat - Cellular Automata](https://appshunter.io/ios/app/tiamat-cellular-automata/id1580189385)
- [Pixator: Pixel Art Maker](https://appshunter.io/ios/app/pixator-pixel-art-maker/id6445889842)
- [Quantum - Particle Life](https://appshunter.io/ios/app/quantum-particle-life/id6504465371)
- [Pixel Purr: Color by Number](https://appshunter.io/ios/app/pixel-purr-color-by-number/id6758962631)

All apps by GEORGY OSTROBROD: https://appshunter.io/developer/1875865758

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*