# 9 Gaze vs IOL Reference

The clearest difference is update cadence: IOL Reference at weekly against 9 Gaze's every 2 months. 9 Gaze's advantage is iOS requirement (13.0 vs 15.5). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for 9 Gaze against 4.7 for IOL Reference. Both are backed by a comparable volume of ratings — 22 and 15 respectively. Written reviews are what separate them: 86% of 9 Gaze's written reviews are positive against 89% of IOL Reference's.

9 Gaze ships an update every 2 months, IOL Reference weekly. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 9 Gaze | IOL Reference |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (22 ratings)](https://appshunter.io/ios/app/9-gaze/id1173442389/reviews) | **[4.7 (15 ratings)](https://appshunter.io/ios/app/iol-reference/id1626671895/reviews)** |
| Number of ratings | **22** | 15 |
| Positive reviews | 85.7% of reviews | **88.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 36 MB | 823 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [See Vision, LLC](https://appshunter.io/developer/1173442388) | [Gurpal Virdi](https://appshunter.io/developer/1626671897) |

## What reviewers say

### 9 Gaze

[App page](https://appshunter.io/ios/app/9-gaze/id1173442389)

This app helps document eye motility and strabismus in nine cardinal positions. It offers an on-screen guide for consistent eye positioning and automatically creates composite images for easy exporting. Users can add strabismus measurements and email or save images for medical records.

**Highlights:** Document eye motility and strabismus, On-screen guide for eye positioning, Automatic composite image creation, Add strabismus measurements, Selfie or standard mode, Email or save images

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

**In-app purchases:** none


### IOL Reference

[App page](https://appshunter.io/ios/app/iol-reference/id1626671895)

This ophthalmology utility helps surgeons find FDA-approved intraocular lenses. It features a searchable database of nearly 10,000 lenses, updated with new approvals and changes. The app also serves as a social media and networking platform for eye care professionals.

**Highlights:** Searchable IOL database, FDA-approved lens catalog, Database updates, Ophthalmology networking, Eye care tools

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

**In-app purchases:** none


## Frequently asked questions

### Is 9 Gaze free?

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

### Is IOL Reference free?

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

### Which has better reviews, 9 Gaze or IOL Reference?

IOL Reference is rated higher. 9 Gaze averages 4.6 out of 5 from 22 ratings, while IOL Reference averages 4.7 from 15 ratings.

### Do 9 Gaze or IOL Reference have ads?

Neither 9 Gaze nor IOL Reference shows ads.

### Which is updated more often, 9 Gaze or IOL Reference?

9 Gaze ships an update every 2 months, and IOL Reference weekly. Most recently, 9 Gaze was updated on October 12, 2026 and IOL Reference on October 14, 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.*