# IOL Reference vs SmartDrop App

The clearest difference is update cadence: IOL Reference at weekly against SmartDrop App's every 5 weeks. IOL Reference also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

IOL Reference ships an update weekly, SmartDrop App every 5 weeks. The most recent releases landed on July 5, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | IOL Reference | SmartDrop App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15 ratings)](https://appshunter.io/ios/app/iol-reference/id1626671895/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free | — |
| Size | 823 MB | 4 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Gurpal Virdi](https://appshunter.io/developer/1626671897) | [Toromedes, Inc](https://appshunter.io/developer/1764842226) |

## 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


### SmartDrop App

[App page](https://appshunter.io/ios/app/smartdrop-app/id6667102573)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IOL Reference free?

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

### Is SmartDrop App free?

SmartDrop App is free to download, with no in-app purchases.

### Do IOL Reference or SmartDrop App have ads?

Neither IOL Reference nor SmartDrop App shows ads.

### Which is updated more often, IOL Reference or SmartDrop App?

IOL Reference ships an update weekly, and SmartDrop App every 5 weeks. Most recently, IOL Reference was updated on July 5, 2026 and SmartDrop App on September 7, 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.*