Comparison

eyeSnellen vs Smart Optometry

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

Head to head
About

eyeSnellen

This app provides a visual acuity test using a Snellen chart on your iPad. It features auto-calibration for accurate results and can be controlled remotely with an iPhone or iPod touch for enhanced functionality. The app is designed for precise vision testing.

Highlights
  • Snellen chart visual acuity test
  • Auto-calibration for accuracy
  • iPhone/iPod remote control
  • Adjustable screen timeout
  • Tested on various iPad and iPhone models
Features
Read full description

The MOST accurate visual acuity test on the iPad (or iPad mini). A built-in auto-calibration function on the iPhone/iPod will adjust the size of the Snellen Chart (and brightness) to produce accurate and reproducible results. The iPad chart is fully functional, but the best way to use the app is with the iPhone/iPod remote (this requires an in-app purchase for full functionality). An auto-dim function is set to time the screen out at 2 minute to prevent the iPad battery from being depleted (this is now user adjustable). Tested with all iPad versions (maximal chart distance 7.4m/24ft), and with the iPad mini (maximal chart distance 6m/20ft). Tested with all current iPods with a built-in camera and iPhones except the iPhone 3. The app has been tested by Ophthalmologists, feedback is encouraged.

About

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.

Highlights
  • 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
Features
Read full description

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 Why should this advanced industry stick with old and outdated practices?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

eyeSnellen2 screens
Smart Optometry4 screens

Verdict

The call

The clearest difference is rating: Smart Optometry at 4.4 against eyeSnellen's 3.0. Smart Optometry also leads on ratings volume (529 vs 4). eyeSnellen's advantage is update cadence (monthly vs every 4 months) and review sentiment (54% vs 42%). On price, ads, in-app purchases and monetization model 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. eyeSnellen sells 1 one-off in-app purchase 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.

ReceptionRating · Positive reviews · Number of ratings

Smart Optometry holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Smart Optometry has 529 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 54% of eyeSnellen'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.

UpkeepUpdate frequency

eyeSnellen ships an update monthly, Smart Optometry every 4 months. The most recent releases landed on October 16, 2026 and October 26, 2026 respectively.

Scorecard5 real differences · 5 level
eyeSnellen versus Smart Optometry: the parameters behind the verdict, then further details
ParametereyeSnellenSmart Optometry
PriceFreeFree
Rating3.0 (4 ratings)4.4 (529 ratings) — better
Positive reviews53.8% of reviews — better42.3% of reviews
Number of ratings4529 — better
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.1 — better13
Further details — not scored
Size16 MB28 MB
Age rating12+12+
DeveloperSteve ColleyHundred Vision d.o.o.

Customer experience

eyeSnellen

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews26 reviews
Positive53.8%
Neutral19.2%
Negative26.9%

Smart Optometry

All ratings529 ratings
Positive83.9%
Neutral4.5%
Negative11.5%
Written reviews52 reviews
Positive42.3%
Neutral7.7%
Negative50.0%

Bugs and requests

eyeSnellen

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

1 purchases

eyeSnellen

One-time1
  • eyeSnellen Pro$9.99
10 purchases

Smart Optometry

Subscriptions2
  • PRO Monthly Subscription$2.991 Month
  • PRO Yearly Subscription$22.991 Year
One-time8
  • Visual Acuity + Test$1.99
  • Red Desaturation Test$1.99
  • Generous Tip$4.99
Show 5 more
  • Generous Tip!$4.99
  • Smart Optometry PRO$9.99
  • PRO Bundle$9.99
  • Massive Tip!$9.99
  • Amazing Tip!$14.99

Questions

Is eyeSnellen free?
eyeSnellen is free to download, with in-app purchases available.
Is Smart Optometry free?
Smart Optometry is free to download, with in-app purchases available.
Which has better reviews, eyeSnellen or Smart Optometry?
Smart Optometry is rated higher. eyeSnellen averages 3.0 out of 5 from 4 ratings, while Smart Optometry averages 4.4 from 529 ratings.
Do eyeSnellen or Smart Optometry have ads?
Neither eyeSnellen nor Smart Optometry shows ads.
Which is updated more often, eyeSnellen or Smart Optometry?
eyeSnellen ships an update monthly, and Smart Optometry every 4 months. Most recently, eyeSnellen was updated on October 16, 2026 and Smart Optometry on October 26, 2026.

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