# EyeGenius Legacy vs Optical Simulator

The clearest difference is device support: Optical Simulator at 3 against EyeGenius Legacy's 1. Optical Simulator also leads on iOS requirement (11.0 vs 14.1). 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.

EyeGenius Legacy ships an update every 2 months, Optical Simulator every 4 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | EyeGenius Legacy | Optical Simulator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 320 MB | 82 MB |
| Requires iOS | 14.1 | **11.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hoya Holdings NV](https://appshunter.io/developer/492618708) | [Treeview Studio SAS](https://appshunter.io/developer/1171912639) |

## What reviewers say

### EyeGenius Legacy

[App page](https://appshunter.io/ios/app/eyegenius-legacy/id1156443335)

**Features:** macOS Compatibility

**In-app purchases:** none


### Optical Simulator

[App page](https://appshunter.io/ios/app/optical-simulator/id1536399422)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EyeGenius Legacy free?

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

### Is Optical Simulator free?

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

### Do EyeGenius Legacy or Optical Simulator have ads?

Neither EyeGenius Legacy nor Optical Simulator shows ads.

### Which is updated more often, EyeGenius Legacy or Optical Simulator?

EyeGenius Legacy ships an update every 2 months, and Optical Simulator every 4 months. Most recently, EyeGenius Legacy was updated on October 26, 2026 and Optical Simulator on October 25, 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.*