Comparison

Control LITE 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

Control LITE

Features
Read full description

Control all the features of the Chart2020 LITE app from your iPhone You can mask, randomize, increase decrease VA sizes from your iPhone, set testing distance, display notations (feet, meters, logMAR and decimal) Control the size of the astigmatism target and the duochrome target for balancing Any function you can control on the iPad app you can control from this app You can use this app on another iPad, iPad mini or even iPad Pro.

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

Control LITE3 screens
Ophthalmology & Optometry4 screens

Verdict

The call

The clearest difference is in-app purchases: Control LITE at none against Ophthalmology & Optometry's 8. Control LITE also leads on iOS requirement (13.0 vs 17.1). Ophthalmology & Optometry's advantage is update cadence (every 5 days vs every 87 months) and chart position (#120 vs unranked). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Control LITE ships an update every 87 months, Ophthalmology & Optometry every 5 days. The most recent releases landed on September 15, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 7 level
Control LITE versus Ophthalmology & Optometry: the parameters behind the verdict, then further details
ParameterControl LITEOphthalmology & Optometry
PriceFreeFree
Rating—4.7 (120 ratings) — better
Positive reviews—60.6% of reviews
Number of ratings—120 — better
Update frequencyEvery 87 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
Best chart rank—#120 — better
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.0 — better17.1
Further details — not scored
Size2 MB240 MB
Age rating4+4+
DeveloperShemesh Health Solutions PTY LtdMy Call Bag LLC

In-app purchases

None

Control LITE

No in-app purchases

8 purchases

Ophthalmology & Optometry

Subscriptions4
  • iPad Monthly Subscription$9.991 Month
  • Monthly Subscription3 Days trial$14.991 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 Control LITE free?
Control LITE is free to download, with no in-app purchases.
Is Ophthalmology & Optometry free?
Ophthalmology & Optometry is free to download, with in-app purchases available.
Do Control LITE or Ophthalmology & Optometry have ads?
Neither Control LITE nor Ophthalmology & Optometry shows ads.
Which is updated more often, Control LITE or Ophthalmology & Optometry?
Control LITE ships an update every 87 months, and Ophthalmology & Optometry every 5 days. Most recently, Control LITE was updated on September 15, 2026 and Ophthalmology & Optometry on October 15, 2026.

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