IOL Reference vs ReferFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IOL Reference
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.
- Searchable IOL database
- FDA-approved lens catalog
- Database updates
- Ophthalmology networking
- Eye care tools
Read full descriptionHide full description
IOL Reference is a cross-platform ophthalmology utility, social media, and networking service that provides users with a wide array of eye care tools to optimize their outcomes. This unique app allows surgeons to quickly search for an FDA-approved, currently marketed intraocular lens (IOLs) that meets their needs and specifications. The database contains almost 10,000 individually cataloged lenses and will be updated to include newly FDA-approved IOLs, changes to current lenses, and corrections. This app was created by Gurpal Virdi, MD and Matt Hirabayashi, MD
ReferFlow
Read full descriptionHide full description
ReferFlow helps optometrists and retina specialists coordinate referrals faster and with less back-and-forth. Optometrists can submit retinal images (OCT, fundus) and key clinical context in a structured workflow. Retina specialists review the case, share an urgency level and guidance, and the referral status is updated in the app. Built-in messaging keeps the conversation tied to the case, so nothing gets lost. Key features: • Structured, image-based referrals (OCT, fundus, and more) • Specialist triage with urgency levels and remarks • Secure in-app messaging per referral • Status updates and closed-loop visibility • Optional app PIN and multi-factor authentication
Screenshots
Verdict
The clearest difference is update cadence: IOL Reference at weekly against ReferFlow's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
IOL Reference ships an update weekly, ReferFlow every 2 weeks. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | IOL Reference | ReferFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (15 ratings) — better | — |
| Positive reviews | 88.9% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 — better | 15.6 |
| Further details — not scored | ||
| Size | 823 MB | 67 MB |
| Age rating | 4+ | 17+ |
| Developer | Gurpal Virdi | ReferFlow |
In-app purchases
IOL Reference
No in-app purchases
ReferFlow
No in-app purchases
Questions
Is IOL Reference free?
Is ReferFlow free?
Do IOL Reference or ReferFlow have ads?
Which is updated more often, IOL Reference or ReferFlow?
Other comparisons















