# eye vs visuSense

The clearest difference is iOS requirement: eye at 15.0 against visuSense's 17.0. 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.

eye ships an update every 2 months, visuSense every 3 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | eye | visuSense |
| --- | --- | --- |
| 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 3 months |
| Monetization | Free | — |
| Size | 409 MB | 53 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Activisu Solutions](https://appshunter.io/developer/631161101) | [Hoya Holdings NV](https://appshunter.io/developer/492618708) |

## 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


### visuSense

[App page](https://appshunter.io/ios/app/visusense/id6642692796)

**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 visuSense free?

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

### Do eye or visuSense have ads?

Neither eye nor visuSense shows ads.

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

eye ships an update every 2 months, and visuSense every 3 months. Most recently, eye was updated on October 24, 2026 and visuSense 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.*