# Unfold vs Epicycles

The clearest difference is price: Epicycles at Free against Unfold's $0.99. Epicycles also leads on rating (5.0 vs 4.2) and update cadence (every 5 days vs every 14 months). Unfold's advantage is ratings volume (47 vs 2) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

Epicycles is free to download; Unfold costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Epicycles holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Unfold has 47 ratings behind it against 2, so its average is the more settled of the two.

Unfold ships an update every 14 months, Epicycles every 5 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Unfold | Epicycles |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.2 (47 ratings)](https://appshunter.io/ios/app/unfold/id557099803/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews)** |
| Number of ratings | **47** | 2 |
| Positive reviews | 83.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 1 MB | 4 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paul Hangas](https://appshunter.io/developer/433121902) | [Limit Point Software](https://appshunter.io/developer/377981570) |

## What reviewers say

### Unfold

[App page](https://appshunter.io/ios/app/unfold/id557099803)

Explore the mathematical and artistic beauty of 3D geometric solids on your device. Interact with 63 different symmetrical shapes, rotating and unfolding them to understand their geometry. Discover Platonic, Archimedean, and Johnson solids with an elegant interface and customizable colors.

**Highlights:** Interactive 3D solids, 63 different geometric shapes, Rotate and zoom functionality, Fold and unfold solids, 18 color options

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Unfold free?

Unfold costs $0.99, with no in-app purchases.

### Is Epicycles free?

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

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

Epicycles is rated higher. Unfold averages 4.2 out of 5 from 47 ratings, while Epicycles averages 5.0 from 2 ratings.

### Do Unfold or Epicycles have ads?

Neither Unfold nor Epicycles shows ads.

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

Unfold ships an update every 14 months, and Epicycles every 5 days. Most recently, Unfold was updated on October 23, 2026 and Epicycles on October 24, 2026.

---

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