# iPhasematch vs NewtonianMechanicsLight

The clearest difference is iOS requirement: NewtonianMechanicsLight at 13.4 against iPhasematch's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

iPhasematch ships an update every 7 months, NewtonianMechanicsLight every 13 months. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | iPhasematch | NewtonianMechanicsLight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/iphasematch/id492370060/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 13 months |
| Monetization | Free | — |
| Size | 6 MB | 2 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yushi Kaneda](https://appshunter.io/developer/492370063) | [Takao Akatsu](https://appshunter.io/developer/1530946331) |

## 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


### NewtonianMechanicsLight

[App page](https://appshunter.io/ios/app/newtonianmechanicslight/id1564963799)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iPhasematch free?

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

### Is NewtonianMechanicsLight free?

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

### Do iPhasematch or NewtonianMechanicsLight have ads?

Neither iPhasematch nor NewtonianMechanicsLight shows ads.

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

iPhasematch ships an update every 7 months, and NewtonianMechanicsLight every 13 months. Most recently, iPhasematch was updated on October 23, 2026 and NewtonianMechanicsLight on October 10, 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.*