Eye Chart HD vs iToric Patwardhan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Eye Chart HD
This app provides a clinically evaluated visual acuity screening tool for various settings. It offers randomized Snellen, Tumbling E, and other charts to help assess vision, especially when traditional charts are unavailable or memorized. Additional features are available through a monthly subscription.
- Randomized Snellen charts
- Tumbling E charts
- Pocket vision screener
- Line randomization
- Chart selector
- Near vision chart (subscription)
- Amsler Grid (subscription)
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Easy to use, clinically evaluated visual acuity screening app. Over 1M people have downloaded our mobile electronic eye charts for iOS. Read below for more information on the clinical evaluations. Useful for: - Triaging - House visits - Hospital rounds - Emergency rooms - Schools - Patients who have memorized the office chart Eye Chart HD is a pocket vision screener: randomized Snellen, Tumbling E, and other charts to offer a rough but useful screen of visual acuity. Simply press a button to randomize the entire eye chart, or touch an individual line of the chart to randomize that line. Swipe right for the chart selector. Eye care professionals around the world use Snellen Eye Charts to measure visual acuity. However, patients often memorize the classic Snellen chart, leading to less accurate vision measurements. Enter Eye Chart HD! Though this unique, pocket-sized randomizable eye chart should not be used as a primary visual acuity measuring tool, it can provide a handy rough vision screen when a chart is not available, or it can be used to complement static, wall-based Snellen charts. Subscription: In addition to our free features, Eye Chart HD offers a subscription to exclusive paid features, including the Randomizable Near Vision Chart, Line Isolation, Amsler Grid, and Single Optotype Charts! The subscription costs $2.99 per month of access and has to be purchased specially within the app. Once purchased, it is available through an auto-renewing subscription which will renew each month for your convenience until you choose to turn it off. Please let us know if you have any questions about your subscription at eyechartapp@gmail.com. Below is further information on clinical evaluations that have been done. Please do check out the papers cited below if you have concerns. We didn't do these tests and can't speak to them, but we are providing them here for transparency and your reference: Snellen & Tumbling E charts on Eye Chart HD on iPhone: “Comparison of Visual Acuity Measurement Using Three Methods: Standard ETDRS Chart, Near Chart and a Smartphone-Based Eye Chart Application” Clinical Ophthalmology. Conclusion: “VA measurements with the Near Chart and smartphone-based Eye Chart application corresponded well to the standard ETDRS chart, suggesting potential utility of alternative portable VA tests for in-office or remote vision monitoring, particularly during periods of physical distancing such as the Coronavirus disease 2019 (COVID-19) era” Sloan Chart on Eye Chart HD on iPhone: “Does the EyeChart App for iPhones Give Comparable Measurements to Traditional Visual Acuity Charts?” The British and Irish Orthoptic Journal. Conclusion: “This study found that the VA scores achieved on the EyeChart app are comparable to those achieved using the gold-standard ETDRS chart in a healthy young adult population. This is a promising finding; however, it is necessary for further large-scale studies to investigate the EyeChart app when used on a variety of patient population groups.” Snellen Chart on Eye Chart HD on iPad Mini: “Comparative Study of the Snellen iPad App versus Traditional Light Box Snellen Chart in Distance Visual Acuity” International Journal of Ophthalmology and Clinical Research. Conclusion: “It showed that the results from Eye Chart HD app used in an iPad Mini 2 agreed with the results of the traditional light-box Snellen Chart when used at the Outpatient Department.“ Rapid Vision Screening Chart on Eye Chart HD on iPhone/iPod: “Assessment of a rapid method to determine approximate visual acuity in large surveys and other such settings.” American Journal of Ophthalmology. Conclusion: “An iPod application requiring about a 1-minute testing time provides an objective, portable, rapid, and low-cost method to determine approximate VA, allowing VA testing to be performed efficiently in large surveys and other settings where approximate VA should be measured.”
iToric Patwardhan
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This is an IOS application conceptualized and developed by Dr Sourabh Dileep Patwardhan FRCS, MD, DNB. Technical support by Script Lanes. The purpose of software is to check the accuracy of Toric marking and suggest new placement axis to reduce errors in placement of IOL. No special instruments or markers needed to get accurate alignment axis. Just a good IOS mobile is all that you need.Double check your markings to avoid errors and improve toric IOL outcome. The practitioner can store the patient's image for analysis later. The practitioner can use the natural landmarks of conjunctiva as well to provide new axis of placement. Also it can be used with Zeiss Calisto eye without markerless system. Medical Disclaimer: This eye measurement app is intended exclusively for use by ophthalmologists and medical professionals. It is not intended for use by the general public. The app is a measurement tool and is not a diagnostic tool. It does not provide any medical advice, diagnosis, or treatment recommendations. The measurements provided by this app should be used as a supplementary tool for ophthalmologists' clinical assessments and should not replace professional judgment, clinical evaluation, or other medical diagnostic procedures. Users of this app should exercise their own discretion and judgment when interpreting the measurements provided. Accuracy Disclaimer: The accuracy of the measurements obtained through this app may vary and is not guaranteed. The measurements are subject to various factors, including but not limited to lighting conditions, camera quality, and user proficiency. Ophthalmologists and medical professionals should use the measurements as a reference only and should not solely rely on them for clinical decisions. We assume no responsibility for any inaccuracies or inconsistencies in the measurements provided by the app. Usage Disclaimer: Users of this app, including ophthalmologists and medical professionals, acknowledge and agree that they are using the app at their own discretion and risk. We shall not be held liable for any consequences, damages, or injuries resulting from the use of this app. Users are responsible for verifying the measurements obtained through the app and for ensuring the safety and well-being of their patients. By using this app, you acknowledge that you have read, understood, and agreed to these disclaimers. If you do not agree with these disclaimers or are uncertain about their implications, you should not use this app. Please consult with legal counsel to ensure that these disclaimers comply with all applicable laws and regulations in your jurisdiction. Additionally, consider displaying these disclaimers prominently within your app and requiring users to accept them before using the app to clearly communicate these terms to users.For more info : patwardhan.sourabh@gmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: iToric Patwardhan at none against Eye Chart HD's 2. iToric Patwardhan also leads on ads (none vs shown) and update cadence (fortnightly vs every 6 months). On price, device support and iOS requirement 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. Eye Chart HD sells 2 in-app purchases, starting at $2.99 per month. iToric Patwardhan asks for nothing beyond the download.
Eye Chart HD ships an update every 6 months, iToric Patwardhan fortnightly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.
| Parameter | Eye Chart HD | iToric Patwardhan |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 6 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 31 MB | 37 MB |
| Age rating | 4+ | 17+ |
| Developer | Dok LLC | Script Lanes |
In-app purchases
Eye Chart HD
- Professional Subscription$2.991 Month
- Eye Chart HD Full Version$0.99
iToric Patwardhan
No in-app purchases
Questions
Is Eye Chart HD free?
Is iToric Patwardhan free?
Do Eye Chart HD or iToric Patwardhan have ads?
Which is updated more often, Eye Chart HD or iToric Patwardhan?
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