# Equation vs Epicycles

The clearest difference is ads: Epicycles at none against Equation's shown. Epicycles also leads on update cadence (every 5 days vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Equation ships an update monthly, Epicycles every 5 days. The most recent releases landed on October 12, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Equation | Epicycles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | — | Free |
| Size | 34 MB | 4 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Limit Point Software](https://appshunter.io/developer/377981570) |

## What reviewers say

### Equation

[App page](https://appshunter.io/ios/app/equation-solver/id1618982230)

**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 Equation free?

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

### Is Epicycles free?

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

### Do Equation or Epicycles have ads?

Equation shows ads; Epicycles does not.

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

Equation ships an update monthly, and Epicycles every 5 days. Most recently, Equation was updated on October 12, 2026 and Epicycles on September 21, 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.*