Eye Chart HD vs Smart Optometry
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.”
Smart Optometry
This app offers eye care professionals a suite of 15 interactive and precise digital eye exams for patient screening and testing. It simplifies the examination process with clear guidelines, fast execution, and automated calculations, supporting a more efficient and accurate diagnostic workflow.
- 15 interactive digital eye exams
- Automated calculation and diagnosis
- Multi-language support
- Vertex and visual acuity calculators
- Simple and fast user interface
- Precise and reliable results
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Smart Optometry is #1 choice for eye care professionals around the world! Give your patients’ best care with 15 FREE INTERACTIVE, PRECISE and SIMPLE eye exams in 9 languages. Join 100.000+ eye care specialists using Smart Optometry for eye examinations! Why should your customers undergo the same tests they always go through when they have their eyes tested? Why should this advanced industry stick with old and outdated practices? Smart Optometry includes 15 TESTS are available for FREE: – Colour Vision – Contrast – Visual Acuity – Worth Four Dot – Schober – OKN Stripes – Flourescin Light – Red Desaturation – Hirschberg – Accommodation – Duochrome – Aniseikonia – Amsler Grid – MEM Retinoscopy – Visual Acuity + To help you make your work simpler, we also included 2 CALCULATORS: – Vertex Conversion – Visual Acuity Conversion Because we know language barrier can be a problem, we localised our application to 11 LANGUAGES: English, Spanish, German, French, Russian, Italian, Polish, Norwegian, Czech, Croatian and Slovenian! Want your language added? Let us know at: info@smart-optometry.com. Still not convinced? Read what sets us apart! Our solution is SIMPLE to use! Eye screening and testing shouldn’t be difficult and inconvenient for neither practitioner or customer! Smart Optometry application is very simple to use: just select the test, read through short guidelines for performing the test, execute it and let our application give you the basic diagnosis – final result or point you in the direction of possible problems that need more thorough examinations! Tests are FAST! While you are filling out paperwork for a patient, he or she can already test his or her eyesight with basic tests provided by Smart Optometry application. There is no logistics involved in performing the tests: just pick up your iPad and test-away! Results provided are PRECISE and reliable! Eye testing and screening often requires eye-care professionals to make calculations – giving the room for error. Eliminate this risk with precise calculations and interpretations done by our Smart Optometry application. Our tests are as precise if not more than the currently used on-the-wall testing equipment. All tests are INTERACTIVE and fun! Wouldn’t it be easier to let patients do the things you ask them, rather than try to explain what they see to you? Smart Optometry application is uniquely interactive: user presses buttons, draws on the screen and this way provides precise results – while having fun! Interactive handling with the Smart Optometry application also enables it to give you result interpretations.
Screenshots
Verdict
The clearest difference is rating: Eye Chart HD at 5.0 against Smart Optometry's 4.4. Smart Optometry's advantage is ads (none vs shown) and ratings volume (529 vs 5). On price, review sentiment, update cadence 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
Both are free to download. Eye Chart HD sells 2 in-app purchases, starting at $2.99 per month and Smart Optometry sells 10 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Eye Chart HD holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Smart Optometry has 529 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 34% of Eye Chart HD's written reviews are positive against 42% of Smart Optometry's, so the app with the better star average is not the one people write more warmly about.
Eye Chart HD ships an update every 6 months, Smart Optometry every 4 months. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.
| Parameter | Eye Chart HD | Smart Optometry |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | 4.4 (529 ratings) |
| Positive reviews | 34.5% of reviews | 42.3% of reviews — better |
| Number of ratings | 5 | 529 — better |
| Update frequency | Every 6 months | Every 4 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13 |
| Further details — not scored | ||
| Size | 31 MB | 28 MB |
| Age rating | 4+ | 12+ |
| Developer | Dok LLC | Hundred Vision d.o.o. |
Customer experience
Eye Chart HD
Smart Optometry
Bugs and requests
Eye Chart HD
Not enough reviews yet to summarise bugs or requests.
Smart Optometry
Reported bugs
5 issues- App crashes on startup
- App closes automatically after login
- App stops working after update
- Tests demand payment for Pro version
- Visual acuity unit converter plus button not working
Requested features
5 requests- Update visual acuity unit converter plus button
- Add inches option for measurement
- Provide explanations for test procedures and expected results
- Make Arabic language available
- Allow calibration of acuity test for different distances
In-app purchases
Eye Chart HD
- Professional Subscription$2.991 Month
- Eye Chart HD Full Version$0.99
Smart Optometry
- PRO Monthly Subscription$2.991 Month
- PRO Yearly Subscription$22.991 Year
- Visual Acuity + Test$1.99
- Red Desaturation Test$1.99
- Generous Tip$4.99
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- Generous Tip!$4.99
- Smart Optometry PRO$9.99
- PRO Bundle$9.99
- Massive Tip!$9.99
- Amazing Tip!$14.99
Questions
Is Eye Chart HD free?
Is Smart Optometry free?
Which has better reviews, Eye Chart HD or Smart Optometry?
Do Eye Chart HD or Smart Optometry have ads?
Which is updated more often, Eye Chart HD or Smart Optometry?
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