Comparison

IOL Reference vs Ophthalmology & Optometry

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Searchable IOL database
  • FDA-approved lens catalog
  • Database updates
  • Ophthalmology networking
  • Eye care tools
Features
Read 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

About

Ophthalmology & Optometry

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
Currently charting
Read full description

Designed for healthcare professionals, this app transforms your iPhone into a comprehensive digital call bag, utilizing the True Depth Camera, gyroscope, and accelerometer. Ophthalmology Tools • Distance vision chart with Apple Watch remote • LiDAR exophthalmometer • AI Lensometer • Topography with Placido Disc • Visual field tool with automated perimetry • Refraction Tool for Rough Bedside Refraction • Pediatric, Tumbling E, and Landolt C optotypes • Ullman Indirect' for fundus photography • Astigmatism Dial stabilized with gyroscope mode • Ishihara, Cambridge, and Pediatric color tests • Axis Finder for toric IOL marking • Strabismus selfie tool • IOL spec sheets • Cornea and retina drawing tools • Slit lamp photography tool • Eye Disease Simulator • Hirschberg strabismus tool • Ptosis MRD measurement tool • IOL simulator • DMEK & Capsulorhexis simulator • 3D Model of eye & orbit Neurology Tools • Vestibular Ocular Motor Screening • Penlight tool with video recording • OKN Drum with adjustable stripes • Near card calibrated with True Depth Camera • Subjective Visual Vertical (SVV) • Dermatome Map • Tuning Fork • NIH Stroke Scale • Navon Figures • Clock Drawing Test • Spiral Drawing Test Optometry Tools • Pupillary distance measurement • Crowding bars in single optotype mode • Amsler Grids with scotoma drawing and recording • Duochrome Test for refractive error assessment • Contrast Sensitivity Chart • Worth 4 Dot Test with pediatric targets • Anisometropia tool • Near point of accommodation measurement using True Depth Camera Emergency Medicine Tools • Vein finder tool • Cobalt Blue Light for corneal abrasion checks • Pupil gauge for measuring pupil size • Goniometer for joint range of motion measurement • Ophthalmic instrument spec sheets Internal Medicine Tools • Measure heart rate with camera • Calculators: - Calcium Correction for Hypoalbuminemia - CHADS-VASC Score for Atrial Fibrillation Stroke Risk - CKD-EPI Equations for Glomerular Filtration Rate (GFR)Mean Arterial Pressure (MAP) - Cockcroft-Gault Calculator - Creatinine Clearance - IOP corrected by pachymetry - Bifocal/Near Add Calculator - Amplitude of Accommodation Calculator - Thyroid Eye Disease (TED) Clinical Activity Score (CAS) Calculator - Spaeth Angle Grading Calculator - Scheie Angle Grading Calculator - Shaffer Grading Calculator - Parks-Bielschowsky 3 Step Test - Vertex Distance Calculator - Percent Tissue Altered LASIK Ectasia Risk Calculator - Randleman Post-LASIK Ectasia Risk Calculator - Body Mass Index (BMI) Calculator - Ocular Trauma Score Calculator - OHTS Glaucoma Calculator - Martin's Tilt Formula Calculator - Reese-Ellsworth Retinoblastoma Classification System - Munnerlyn Formula Calculator (Ablation Depth Calculator) - IOL Bag vs Sulcus Power Calculator - Glasgow Coma Scale (GCS) Calculator - Pediatric Glasgow Coma Scale Calculator - Wells' Criteria for DVT Calculator - Maintenance Fluids Calculator - Corrected QT Interval (QTc) Calculator - Wells' Criteria for PE - Intracerebral Hemorrhage (ICH) Score Calculator - Intracerebral Hemorrhage (ICH) Score Calculator - Steroid Conversion Calculator ...and many more! Customize Your Call Bag • Select favorite tools • Presets for various subspecialties • Metric and imperial system mode No invasive advertisements! No data collection! *Formerly called the "Eye Chart App" Disclaimer: This app is intended as an educational tool for healthcare professionals and should not replace traditional methods. It is not for self-diagnosis or treatment without professional guidance. This app is NOT intended for diagnosis, cure, mitigation, treatment, or prevention of disease, nor to affect the structure or any function of the body.* *iPad "Eye Chart" app now available separately that can test distance vision, this app can be run on the iPad but is not specifically formatted for iPad screens** Terms of Service: http://MyCallBag.com/terms.html

Screenshots

IOL Reference4 screens
Ophthalmology & Optometry4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 5 level
IOL Reference versus Ophthalmology & Optometry: the parameters behind the verdict, then further details
ParameterIOL ReferenceOphthalmology & Optometry
PriceFreeFree
Rating4.7 (15 ratings) — better4.7 (120 ratings)
Positive reviews88.9% of reviews — better60.6% of reviews
Number of ratings15120 — better
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#153 — better
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.5 — better17.1
Further details — not scored
Size823 MB231 MB
Age rating4+4+
DeveloperGurpal VirdiMy Call Bag LLC

Customer experience

IOL Reference

All ratings15 ratings
Positive93.3%
Neutral0.0%
Negative6.7%
Written reviews9 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

Ophthalmology & Optometry

All ratings120 ratings
Positive91.7%
Neutral3.3%
Negative5.0%
Written reviews33 reviews
Positive60.6%
Neutral12.1%
Negative27.3%

In-app purchases

None

IOL Reference

No in-app purchases

8 purchases

Ophthalmology & Optometry

Subscriptions4
  • Monthly Subscription3 Days trial$9.991 Month
  • iPad Monthly Subscription$9.991 Month
  • Annual Subscription to iPad App7 Days trial$49.991 Year
Show 1 more
  • Annual Subscription3 Days trial$49.991 Year
One-time4
  • 100 Credits$3.99
  • 500 Credits$19.99
  • Lifetime Access to iPad App$149.99
Show 1 more
  • My Call Bag$249.99

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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