# Epicycles vs Quantum

The clearest difference is in-app purchases: Epicycles at none against Quantum's 6. Epicycles also leads on update cadence (every 5 days vs every 5 weeks) and iOS requirement (15.0 vs 26.0). Quantum's advantage is ratings volume (151 vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. Quantum 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: Quantum has 151 ratings behind it against 2, so its average is the more settled of the two.

Epicycles ships an update every 5 days, Quantum every 5 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Epicycles | Quantum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews)** | [4.8 (151 ratings)](https://appshunter.io/ios/app/quantum-particle-life/id6504465371/reviews) |
| Number of ratings | 2 | **151** |
| Positive reviews | — | 81.3% 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


### Quantum

[App page](https://appshunter.io/ios/app/quantum-particle-life/id6504465371)

Explore the hidden world of particles with a real-time simulator. Model up to 10,000 particles and experiment with natural phenomena like crystallization and orbital mechanics. Customize interactions and visualize results dynamically.

**Highlights:** Real-time particle simulation, Model up to 10,000 particles, Simulate natural phenomena, Four distinct particle classes, Customizable rules editor, Dynamic visualizations, Interactive control

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Developer tip | $1.99 | one-time |
| Developer tip | $3.99 | one-time |
| Developer tip | $5.99 | one-time |


## Frequently asked questions

### Is Epicycles free?

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

### Is Quantum free?

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

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

Epicycles is rated higher. Epicycles averages 5.0 out of 5 from 2 ratings, while Quantum averages 4.8 from 151 ratings.

### Do Epicycles or Quantum have ads?

Neither Epicycles nor Quantum shows ads.

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

Epicycles ships an update every 5 days, and Quantum every 5 weeks. Most recently, Epicycles was updated on October 24, 2026 and Quantum on October 30, 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.*