Comparison

Chart2020 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

Chart2020 Lite

This app provides a digital eye chart with various testing options, including different chart types and masking features. It offers remote control capabilities via a companion iPhone app or an optional Bluetooth remote, making it suitable for professional and home use.

Highlights
  • Multiple chart types (Sloan/Snellen, Balancing, Astigmatism)
  • Customizable testing distance
  • Variety of letter/number/symbol sets
  • Masking and randomization options
  • Companion iPhone app for remote control
  • Optional Bluetooth remote control
Features
Read full description

Chart Types * Sloan / Snellen Charts * Balancing Charts * Astigmatism Charts Chart Features * Set exact testing testing distance * Quickly switch to near distance testing with distance selector * Letters, Numbers, Kids, E, C, HOTV, 6 Global Fonts * 4 Masking options * Randomize letter set Controllers * Control direct on the iPad * Use the companion iPhone app * See the displayed letters on the iPhone (no neck turning) * Control every feature from the iPhone * Order the Bluetooth Remote Control to control with a 6 button controller Uses * Ophthalmologist and Optometrists * Completely mobile for school testing * Emergency Room * Functional Evaluation Capacity for Companies * Home Use * Students The Chart2020 iPad App comes with a 30 day free trial. After this period you may purchase an auto-renewing subscription through an In-App Purchase. (If you do not maintain a subscription you can only use the App for thirty days and then it will expire) • Auto-renewable subscription • 1 month ($29.99) / 1 Year ($199.99) • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. http://chart2020.com/privacy-policy https://www.chart2020.com/terms-of-use

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

Ophthalmology & Optometry4 screens

Verdict

The call

The clearest difference is review sentiment: Ophthalmology & Optometry at 61% against Chart2020 Lite's 0%. Ophthalmology & Optometry also leads on rating (4.7 vs 1.0) and monetization model (free with in-app purchases vs subscription). Chart2020 Lite's advantage is iOS requirement (12.0 vs 17.1). On price, ads and in-app purchases 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. Chart2020 Lite sells 4 in-app purchases, starting at $7.99 per 7 days and Ophthalmology & Optometry sells 8 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Ophthalmology & Optometry holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Ophthalmology & Optometry has 120 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Chart2020 Lite's written reviews are positive against 61% of Ophthalmology & Optometry's.

UpkeepUpdate frequency

Chart2020 Lite ships an update every 3 months, Ophthalmology & Optometry every 4 days. The most recent releases landed on June 1, 2026 and September 23, 2026 respectively.

Scorecard8 real differences · 3 level
Chart2020 Lite versus Ophthalmology & Optometry: the parameters behind the verdict, then further details
ParameterChart2020 LiteOphthalmology & Optometry
PriceFreeFree
Rating1.0 (1 ratings)4.7 (120 ratings) — better
Positive reviews0.0% of reviews60.6% of reviews — better
Number of ratings1120 — better
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
Best chart rank—#122 — better
DevicesiPadiPhone, iPad, Apple Watch — better
Requires iOS12.0 — better17.1
Further details — not scored
Size58 MB231 MB
Age rating4+4+
DeveloperShemesh Health Solutions PTY LtdMy Call Bag LLC

Customer experience

Chart2020 Lite

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Ophthalmology & Optometry

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

In-app purchases

4 purchases

Chart2020 Lite

Subscriptions4
  • Weekly Subscription3 Days trial$7.997 Days
  • Weekly Subscription1 Month trial$7.997 Days
  • Monthly Subscription1 Month trial$19.991 Month
Show 1 more
  • Yearly Subscription1 Month trial$149.991 Year
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 Chart2020 Lite free?
Chart2020 Lite is free to download, with in-app purchases available.
Is Ophthalmology & Optometry free?
Ophthalmology & Optometry is free to download, with in-app purchases available.
Which has better reviews, Chart2020 Lite or Ophthalmology & Optometry?
Ophthalmology & Optometry is rated higher. Chart2020 Lite averages 1.0 out of 5 from 1 ratings, while Ophthalmology & Optometry averages 4.7 from 120 ratings.
Do Chart2020 Lite or Ophthalmology & Optometry have ads?
Neither Chart2020 Lite nor Ophthalmology & Optometry shows ads.
Which is updated more often, Chart2020 Lite or Ophthalmology & Optometry?
Chart2020 Lite ships an update every 3 months, and Ophthalmology & Optometry every 4 days. Most recently, Chart2020 Lite was updated on June 1, 2026 and Ophthalmology & Optometry on September 23, 2026.

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