# Epicycles vs Polynomial Regression

The clearest difference is update cadence: Epicycles at every 5 days against Polynomial Regression's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

Epicycles ships an update every 5 days, Polynomial Regression every 3 weeks. The most recent releases landed on June 5, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Epicycles | Polynomial Regression |
| --- | --- | --- |
| 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 | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 4 MB | 4 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Limit Point Software](https://appshunter.io/developer/377981570) | [Yuri Morozov](https://appshunter.io/developer/1582368813) |

## 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


### Polynomial Regression

[App page](https://appshunter.io/ios/app/polynomial-regression/id6741364702)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Epicycles free?

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

### Is Polynomial Regression free?

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

### Do Epicycles or Polynomial Regression have ads?

Neither Epicycles nor Polynomial Regression shows ads.

### Which is updated more often, Epicycles or Polynomial Regression?

Epicycles ships an update every 5 days, and Polynomial Regression every 3 weeks. Most recently, Epicycles was updated on June 5, 2026 and Polynomial Regression on September 14, 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.*