# Optical Toolkit vs Sorphase

The clearest difference is price: Optical Toolkit at Free against Sorphase's $3.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Optical Toolkit is free to download; Sorphase costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Optical Toolkit | Sorphase |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 3 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sanjay Yadav](https://appshunter.io/developer/1507771486) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### Optical Toolkit

[App page](https://appshunter.io/ios/app/optical-toolkit/id6761304395)

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

**In-app purchases:** none


### Sorphase

[App page](https://appshunter.io/ios/app/sorphase-otdr-trace-lab/id6793301605)

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

**In-app purchases:** none


## Frequently asked questions

### Is Optical Toolkit free?

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

### Is Sorphase free?

Sorphase costs $3.99, with no in-app purchases.

### Do Optical Toolkit or Sorphase have ads?

Neither Optical Toolkit nor Sorphase shows ads.

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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.*