# IOL Reference vs Ophthalmology & Optometry

The clearest difference is in-app purchases: IOL Reference at none against Ophthalmology & Optometry's 8. IOL Reference also leads on review sentiment (89% vs 61%) and iOS requirement (15.5 vs 17.1). Ophthalmology & Optometry's advantage is chart position (#153 vs unranked) and ratings volume (120 vs 15). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Ophthalmology & Optometry sells 8 in-app purchases, starting at $9.99 per month. IOL Reference asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for IOL Reference against 4.7 for Ophthalmology & Optometry. That said, the two scores are not equally well evidenced: Ophthalmology & Optometry has 120 ratings behind it against 15, so its average is the more settled of the two. Written reviews are what separate them: 89% of IOL Reference's written reviews are positive against 61% of Ophthalmology & Optometry's.

IOL Reference ships an update weekly, Ophthalmology & Optometry every 4 days. The most recent releases landed on July 5, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | IOL Reference | Ophthalmology & Optometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15 ratings)](https://appshunter.io/ios/app/iol-reference/id1626671895/reviews)** | [4.7 (120 ratings)](https://appshunter.io/ios/app/ophthalmology-and-optometry/id6471442410/reviews) |
| Number of ratings | 15 | **120** |
| Positive reviews | **88.9% of reviews** | 60.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#153** |
| Size | 823 MB | 231 MB |
| Requires iOS | **15.5** | 17.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Gurpal Virdi](https://appshunter.io/developer/1626671897) | [My Call Bag LLC](https://appshunter.io/developer/1243282862) |

## What reviewers say

### 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


### Ophthalmology & Optometry

[App page](https://appshunter.io/ios/app/ophthalmology-and-optometry/id6471442410)

**Currently charting:** #153 Top Grossing · Medical (US App Store)

This app transforms your iPhone into a comprehensive digital call bag for healthcare professionals. It offers a wide array of specialized tools for ophthalmology, neurology, optometry, emergency medicine, and internal medicine, leveraging advanced iPhone camera and sensor technology.

**Highlights:** Ophthalmology diagnostic tools, Neurology screening tools, Optometry vision tests, Emergency medicine aids, Internal medicine calculators, LiDAR exophthalmometer, AI Lensometer

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $9.99 | per month |
| iPad Monthly Subscription | $9.99 | per month |
| Annual Subscription to iPad App | $49.99 | per year |
| Annual Subscription | $49.99 | per year |
| 100 Credits | $3.99 | one-time |
| 500 Credits | $19.99 | one-time |
| Lifetime Access to iPad App | $149.99 | one-time |
| My Call Bag | $249.99 | one-time |


## Frequently asked questions

### Is IOL Reference free?

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

### Is Ophthalmology & Optometry free?

Ophthalmology & Optometry is free to download, with in-app purchases available.

### Which has better reviews, IOL Reference or Ophthalmology & Optometry?

IOL Reference is rated higher. IOL Reference averages 4.7 out of 5 from 15 ratings, while Ophthalmology & Optometry averages 4.7 from 120 ratings.

### Do IOL Reference or Ophthalmology & Optometry have ads?

Neither IOL Reference nor Ophthalmology & Optometry shows ads.

### Which is updated more often, IOL Reference or Ophthalmology & Optometry?

IOL Reference ships an update weekly, and Ophthalmology & Optometry every 4 days. Most recently, IOL Reference was updated on July 5, 2026 and Ophthalmology & Optometry on September 23, 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.*