# Physarum vs Relational Algebra

The clearest difference is in-app purchases: Relational Algebra at none against Physarum's 6. Relational Algebra also leads on iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Physarum sells 3 one-off in-app purchases. Relational Algebra asks for nothing beyond the download.

## The numbers

| Metric | Physarum | Relational Algebra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (32 ratings)](https://appshunter.io/ios/app/physarum-slime-mold/id6744574947/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 38 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GEORGY OSTROBROD](https://appshunter.io/developer/1875865758) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### Physarum

[App page](https://appshunter.io/ios/app/physarum-slime-mold/id6744574947)

Explore the fascinating emergent behavior of slime molds through a visually rich simulation. Adjust agent parameters, influence growth with intuitive controls, and discover complex, mesmerizing patterns.

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

**In-app purchases (3)**

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


### Relational Algebra

[App page](https://appshunter.io/ios/app/relational-algebra/id6773055862)

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

**In-app purchases:** none


## Frequently asked questions

### Is Physarum free?

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

### Is Relational Algebra free?

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

### Do Physarum or Relational Algebra have ads?

Neither Physarum nor Relational Algebra shows ads.

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