# flexiTester vs Optical Toolkit

The clearest difference is device support: Optical Toolkit at 2 against flexiTester's —. flexiTester's advantage is iOS requirement (15.0 vs 17.0). On price 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.

## The numbers

| Metric | flexiTester | Optical Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Size | 8 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Nextfiber Co., Ltd](https://appshunter.io/developer/1734158640) | [Sanjay Yadav](https://appshunter.io/developer/1507771486) |

## What reviewers say

### flexiTester

[App page](https://appshunter.io/ios/app/flexitester/id6478847200)

**In-app purchases:** none


### Optical Toolkit

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

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

**In-app purchases:** none


## Frequently asked questions

### Is flexiTester free?

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

### Is Optical Toolkit free?

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

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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.*