# Ullman Indirect vs IOL Reference

The clearest difference is price: IOL Reference at Free against Ullman Indirect's $3.99. IOL Reference also leads on rating (4.7 vs 4.1) and review sentiment (89% vs 53%). Ullman Indirect's advantage is chart position (#154 vs unranked). On ratings volume, ads, in-app purchases and device support there is nothing between them.

IOL Reference is free to download; Ullman Indirect costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

IOL Reference holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 10 and 15 respectively. Written reviews point the same way: 53% of Ullman Indirect's written reviews are positive against 89% of IOL Reference's.

Ullman Indirect ships an update every 5 weeks, IOL Reference weekly. The most recent releases landed on September 21, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | Ullman Indirect | IOL Reference |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.1 (10 ratings)](https://appshunter.io/ios/app/ullman-indirect/id1243282866/reviews) | **[4.7 (15 ratings)](https://appshunter.io/ios/app/iol-reference/id1626671895/reviews)** |
| Number of ratings | 10 | **15** |
| Positive reviews | 53.3% of reviews | **88.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Paid | **Free** |
| Best chart rank | **#154** | — |
| Size | 1 MB | 823 MB |
| Requires iOS | 17.2 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [My Call Bag LLC](https://appshunter.io/developer/1243282862) | [Gurpal Virdi](https://appshunter.io/developer/1626671897) |

## What reviewers say

### Ullman Indirect

[App page](https://appshunter.io/ios/app/ullman-indirect/id1243282866)

**Currently charting:** #154 Top Paid · Medical (US App Store)

Capture high-quality fundus photos using your iPhone. Control focus, exposure, and light intensity, and quickly add labels to your images. This tool is intended for educational purposes.

**Highlights:** Capture high-quality fundus photos, Control focus, exposure, and light, Add labels to images, Smartphone fundoscopy tool, Educational purposes

**Features:** 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 Ullman Indirect free?

Ullman Indirect costs $3.99, with no in-app purchases.

### Is IOL Reference free?

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

### Which has better reviews, Ullman Indirect or IOL Reference?

IOL Reference is rated higher. Ullman Indirect averages 4.1 out of 5 from 10 ratings, while IOL Reference averages 4.7 from 15 ratings.

### Do Ullman Indirect or IOL Reference have ads?

Neither Ullman Indirect nor IOL Reference shows ads.

### Which is updated more often, Ullman Indirect or IOL Reference?

Ullman Indirect ships an update every 5 weeks, and IOL Reference weekly. Most recently, Ullman Indirect was updated on September 21, 2026 and IOL Reference on July 5, 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.*