# iPhasematch vs Epicycles

The clearest difference is update cadence: Epicycles at every 5 days against iPhasematch's every 7 months. 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 iPhasematch against 5.0 for Epicycles. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

iPhasematch ships an update every 7 months, Epicycles every 5 days. The most recent releases landed on October 7, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | iPhasematch | Epicycles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/iphasematch/id492370060/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews) |
| Number of ratings | 2 | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 6 MB | 4 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yushi Kaneda](https://appshunter.io/developer/492370063) | [Limit Point Software](https://appshunter.io/developer/377981570) |

## What reviewers say

### iPhasematch

[App page](https://appshunter.io/ios/app/iphasematch/id492370060)

Calculate nonlinear optical effects like second-harmonic generation and spontaneous parametric down-conversion. This app provides phasematching orientations, nonlinear coefficients, and tolerance values for various crystals based on Sellmeier equations.

**Highlights:** Phasematching condition calculation, Sellmeier equation integration, Effective nonlinear optical coefficients, Walk-off and angular tolerance, Temperature tolerance, Supported crystal list

**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 iPhasematch free?

iPhasematch 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, iPhasematch or Epicycles?

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

### Do iPhasematch or Epicycles have ads?

Neither iPhasematch nor Epicycles shows ads.

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

iPhasematch ships an update every 7 months, and Epicycles every 5 days. Most recently, iPhasematch was updated on October 7, 2026 and Epicycles on September 21, 2026.

---

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