# Epicycles vs Physarum

The clearest difference is in-app purchases: Epicycles at none against Physarum's 6. Epicycles also leads on update cadence (every 5 days vs every 5 weeks) and rating (5.0 vs 4.8). Physarum's advantage is ratings volume (34 vs 2). On price, ads and device support there is nothing between them.

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

Epicycles holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Physarum has 34 ratings behind it against 2, so its average is the more settled of the two.

Epicycles ships an update every 5 days, Physarum every 5 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Epicycles | Physarum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews)** | [4.8 (34 ratings)](https://appshunter.io/ios/app/physarum-slime-mold/id6744574947/reviews) |
| Number of ratings | 2 | **34** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 32 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Limit Point Software](https://appshunter.io/developer/377981570) | [GEORGY OSTROBROD](https://appshunter.io/developer/1875865758) |

## What reviewers say

### Epicycles

[App page](https://appshunter.io/ios/app/epicycles/id6450433959)

Explore the visualization of complex Fourier series through interactive epicycles. Create and analyze approximations of parametric curves and complex functions. Save animations and export custom terms for later use.

**Highlights:** Visualize Fourier series of 2D functions, Create epicycles from drawn curves, Save custom terms to documents, Export animations as GIFs, Adjust time and number of terms, Interactive graphic elements

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Epicycles free?

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

### Is Physarum free?

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

### Which has better reviews, Epicycles or Physarum?

Epicycles is rated higher. Epicycles averages 5.0 out of 5 from 2 ratings, while Physarum averages 4.8 from 34 ratings.

### Do Epicycles or Physarum have ads?

Neither Epicycles nor Physarum shows ads.

### Which is updated more often, Epicycles or Physarum?

Epicycles ships an update every 5 days, and Physarum every 5 weeks. Most recently, Epicycles was updated on November 3, 2026 and Physarum on November 5, 2026.

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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.*