# iNSIGHT Spatial Vision vs Epicycles

The clearest difference is price: Epicycles at Free against iNSIGHT Spatial Vision's $2.99. Epicycles also leads on update cadence (every 5 days vs every 39 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Epicycles is free to download; iNSIGHT Spatial Vision costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iNSIGHT Spatial Vision ships an update every 39 months, Epicycles every 5 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | iNSIGHT Spatial Vision | Epicycles |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 5 days** |
| Monetization | — | Free |
| Size | 125 MB | 4 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) | [Limit Point Software](https://appshunter.io/developer/377981570) |

## What reviewers say

### iNSIGHT Spatial Vision

[App page](https://appshunter.io/ios/app/insight-spatial-vision/id602302299)

**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 iNSIGHT Spatial Vision free?

iNSIGHT Spatial Vision costs $2.99, with no in-app purchases.

### Is Epicycles free?

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

### Do iNSIGHT Spatial Vision or Epicycles have ads?

Neither iNSIGHT Spatial Vision nor Epicycles shows ads.

### Which is updated more often, iNSIGHT Spatial Vision or Epicycles?

iNSIGHT Spatial Vision ships an update every 39 months, and Epicycles every 5 days. Most recently, iNSIGHT Spatial Vision was updated on October 29, 2026 and Epicycles on October 24, 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.*