# OptiExpert™ vs 9 Gaze

The clearest difference is review sentiment: 9 Gaze at 86% against OptiExpert™'s 22%. 9 Gaze also leads on rating (4.6 vs 4.0) and ratings volume (22 vs 7). 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.

9 Gaze holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 7 and 22 respectively. Written reviews point the same way: 22% of OptiExpert™'s written reviews are positive against 86% of 9 Gaze's.

OptiExpert™ ships an update every 3 months, 9 Gaze every 2 months. The most recent releases landed on September 13, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | OptiExpert™ | 9 Gaze |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (7 ratings)](https://appshunter.io/ios/app/optiexpert/id922445936/reviews) | **[4.6 (22 ratings)](https://appshunter.io/ios/app/9-gaze/id1173442389/reviews)** |
| Number of ratings | 7 | **22** |
| Positive reviews | 22.2% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 63 MB | 36 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [CooperVision, Inc.](https://appshunter.io/developer/922445935) | [See Vision, LLC](https://appshunter.io/developer/1173442388) |

## What reviewers say

### OptiExpert™

[App page](https://appshunter.io/ios/app/optiexpert/id922445936)

This app assists eye care professionals in managing contact lens wearers. It offers tools for prescription calculation, axial length estimation, cost comparison, and grading contact lens complications with visual aids. It also supports patient education and secure record-keeping.

**Highlights:** Prescription Calculator, Axial Length Estimator, Cost Comparison Calculator, Efron Grading Scale, Patient Image Storage, Multilingual Support

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

**In-app purchases:** none


### 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 OptiExpert™ free?

OptiExpert™ 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, OptiExpert™ or 9 Gaze?

9 Gaze is rated higher. OptiExpert™ averages 4.0 out of 5 from 7 ratings, while 9 Gaze averages 4.6 from 22 ratings.

### Do OptiExpert™ or 9 Gaze have ads?

Neither OptiExpert™ nor 9 Gaze shows ads.

### Which is updated more often, OptiExpert™ or 9 Gaze?

OptiExpert™ ships an update every 3 months, and 9 Gaze every 2 months. Most recently, OptiExpert™ was updated on September 13, 2026 and 9 Gaze on August 27, 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.*