# Eye Handbook vs 9 Gaze

The clearest difference is ads: 9 Gaze at none against Eye Handbook's shown. 9 Gaze also leads on monetization model (free vs ad-supported) and iOS requirement (13.0 vs 16.0). Eye Handbook's advantage is ratings volume (1.2K vs 22) and rating (4.8 vs 4.6). On price, review sentiment, in-app purchases and device support there is nothing between them.

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

Eye Handbook holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Eye Handbook has 1.2K ratings behind it against 22, so its average is the more settled of the two. Written reviews complicate that: 82% of Eye Handbook's written reviews are positive against 86% of 9 Gaze's, so the app with the better star average is not the one people write more warmly about.

Eye Handbook ships an update every 3 weeks, 9 Gaze every 2 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | Eye Handbook | 9 Gaze |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.2K ratings)](https://appshunter.io/ios/app/eye-handbook/id335546959/reviews)** | [4.6 (22 ratings)](https://appshunter.io/ios/app/9-gaze/id1173442389/reviews) |
| Number of ratings | **1.2K** | 22 |
| Positive reviews | 82.2% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | **Free** |
| Size | 480 MB | 36 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Cloud Nine Development LLC](https://appshunter.io/developer/335546962) | [See Vision, LLC](https://appshunter.io/developer/1173442388) |

## What reviewers say

### Eye Handbook

[App page](https://appshunter.io/ios/app/eye-handbook/id335546959)

A comprehensive eye care reference app for ophthalmologists, optometrists, and students. It offers diagnostic tools, treatment references, calculators, educational resources, and community forums to support eye care professionals.

**Highlights:** Diagnostic and treatment reference, Eye calculators (visual acuity, diabetic retinopathy, etc.), Medication and pharmacopeia, Ophthalmology and optometry journals, Patient education tools, Peer-to-peer forums, Eye atlas and diagrams

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

**In-app purchases:** none

**What reviewers like**

- 👍 Useful information and tools
- 🚀 Comprehensive and efficient
- 💡 Great resource for eye care professionals
- 😊 Excellent app overall

**What reviewers complain about**

- 🐛 Crashes and bugs
- 📢 Intrusive ads and pop-ups
- 🔍 Poorly organized interface
- 🔋 High battery consumption

**Reported bugs**

- Registration process issues
- Compatibility problems with newer iOS versions
- Incorrect medication information

**Requested features**

- Add Tumbling E and Landolt C charts
- Improve search functionality
- Provide a paid ad-free version
- Optimize for larger screens (iPad)


### 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


## Frequently asked questions

### Is Eye Handbook free?

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

### Is 9 Gaze free?

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

### Which has better reviews, Eye Handbook or 9 Gaze?

Eye Handbook is rated higher. Eye Handbook averages 4.8 out of 5 from 1.2K ratings, while 9 Gaze averages 4.6 from 22 ratings.

### Do Eye Handbook or 9 Gaze have ads?

Eye Handbook shows ads; 9 Gaze does not.

### Which is updated more often, Eye Handbook or 9 Gaze?

Eye Handbook ships an update every 3 weeks, and 9 Gaze every 2 months. Most recently, Eye Handbook was updated on November 6, 2026 and 9 Gaze on November 6, 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.*