# Crystal Flight vs Epicycles

The clearest difference is update cadence: Epicycles at every 5 days against Crystal Flight's every 5 months. Epicycles also leads on iOS requirement (15.0 vs 17.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Crystal Flight against 5.0 for Epicycles. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Crystal Flight ships an update every 5 months, Epicycles every 5 days. The most recent releases landed on July 5, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Crystal Flight | Epicycles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/crystal-flight/id1436396839/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 4 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Weeks](https://appshunter.io/developer/326104308) | [Limit Point Software](https://appshunter.io/developer/377981570) |

## What reviewers say

### Crystal Flight

[App page](https://appshunter.io/ios/app/crystal-flight/id1436396839)

Experience free flight within diverse crystal environments. Navigate your journey by simply tilting your iPhone or iPad to control direction.

**Highlights:** Free flight simulation, Crystal environments, Tilt-to-navigate controls, iPhone and iPad support

**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 Crystal Flight free?

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

### Is Epicycles free?

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

### Which has better reviews, Crystal Flight or Epicycles?

Crystal Flight and Epicycles are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Crystal Flight or Epicycles have ads?

Neither Crystal Flight nor Epicycles shows ads.

### Which is updated more often, Crystal Flight or Epicycles?

Crystal Flight ships an update every 5 months, and Epicycles every 5 days. Most recently, Crystal Flight was updated on July 5, 2026 and Epicycles on June 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.*