# eye vs VisuDoc

The clearest difference is device support: VisuDoc at 3 against eye's 1. VisuDoc also leads on iOS requirement (13.0 vs 15.0). 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.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 12, 2026.

## The numbers

| Metric | eye | VisuDoc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (4 ratings)](https://appshunter.io/ios/app/eye-ruler-2/id1248865139/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 409 MB | 169 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Activisu Solutions](https://appshunter.io/developer/631161101) | [VisuScience Meditech Co., Ltd.](https://appshunter.io/developer/1560274516) |

## What reviewers say

### eye

[App page](https://appshunter.io/ios/app/eye-ruler-2/id1248865139)

This iPad application assists eye care professionals in taking precise fitting parameters for personalized lenses. It requires a specific kit from Essilor to function, enabling measurements like far PD, height, and vertex distance.

**Highlights:** Measure Far Pd, Measure Height, Measure Wrap Angle, Measure Pantoscopic Angle, Measure Vertex, Measure Reading Distance

**Features:** Vision Pro support

**In-app purchases:** none


### VisuDoc

[App page](https://appshunter.io/ios/app/visudoc/id1607945289)

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

**In-app purchases:** none


## Frequently asked questions

### Is eye free?

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

### Is VisuDoc free?

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

### Do eye or VisuDoc have ads?

Neither eye nor VisuDoc shows ads.

### Which is updated more often, eye or VisuDoc?

eye ships an update every 2 months, and VisuDoc every 2 months. Most recently, eye was updated on October 12, 2026 and VisuDoc on October 12, 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.*