Comparison

Smart Optometry vs 9 Gaze

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

Head to head
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 Why should this advanced industry stick with old and outdated practices?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.

About

9 Gaze

This app helps document eye motility and strabismus in nine cardinal positions. It offers an on-screen guide for consistent eye positioning and automatically creates composite images for easy exporting. Users can add strabismus measurements and email or save images for medical records.

Highlights
  • Document eye motility and strabismus
  • On-screen guide for eye positioning
  • Automatic composite image creation
  • Add strabismus measurements
  • Selfie or standard mode
  • Email or save images
Features
Read full description

9 Gaze is an easy, quick, and efficient way to document eye motility and strabismus in the nine cardinal positions of gaze (and 2 head tilts, abnormal head position). The app provides an on-screen guide for eye positioning to assist with image consistency through all photographs. 9Gaze app automatically creates a composite image of the photographs for easy exporting. Designed for a touch-screen interface, you can also quickly add strabismus measurements to your photograph or as a stand-alone image. You can email the images to yourself for importing into your record or save to your camera roll. Features: - Selfie mode or standard mode - On-screen guide for placement of eyes (with autocrop) - Automatic creation of the composite image of all 9(+2) positions of gaze - Ability to skip gaze directions (or skip to end) - Re-take any picture - Turn flash on or off - Landscape and portrait modes - Ability to document name, ID number, date of birth, and date of picture Save time with 9 Gaze! Disclaimer: No information or photos are ever saved within the app. It is the user's responsibility to protect any and all protected health information (PHI) obtained by the user. If you choose to save images to camera roll, it is highly suggested to encrypt your phone and turn off iCloud photo backup. When emailing photos, please make sure your email is HIPAA secure. This is not a medical device. Do not use app to diagnose or treat any medical conditions.

Screenshots

Smart Optometry4 screens
9 Gaze4 screens

Verdict

The call

Smart Optometry and 9 Gaze both sit at 4.4 stars, but that hides the real split: 86% of 9 Gaze's written reviews are positive against 42% of Smart Optometry's. 9 Gaze also leads on in-app purchases (none vs 10) and update cadence (every 2 months vs every 4 months). Smart Optometry's advantage is ratings volume (529 vs 22). On price, rating, 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. Smart Optometry sells 10 in-app purchases, starting at $2.99 per month. 9 Gaze asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

9 Gaze holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Smart Optometry has 529 ratings behind it against 22, so its average is the more settled of the two. Written reviews point the same way: 42% of Smart Optometry's written reviews are positive against 86% of 9 Gaze's.

UpkeepUpdate frequency

Smart Optometry ships an update every 4 months, 9 Gaze every 2 months. The most recent releases landed on September 20, 2026 and August 27, 2026 respectively.

Scorecard5 real differences · 5 level
Smart Optometry versus 9 Gaze: the parameters behind the verdict, then further details
ParameterSmart Optometry9 Gaze
PriceFreeFree
Rating4.4 (529 ratings)4.6 (22 ratings) — better
Positive reviews42.3% of reviews85.7% of reviews — better
Number of ratings529 — better22
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1313.0
Further details — not scored
Size28 MB36 MB
Age rating12+12+
DeveloperHundred Vision d.o.o.See Vision, LLC

Customer experience

Smart Optometry

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

9 Gaze

All ratings22 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews14 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Bugs and 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

9 Gaze

Not enough reviews yet to summarise bugs or requests.

In-app purchases

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
None

9 Gaze

No in-app purchases

Questions

Is Smart Optometry free?
Smart Optometry is free to download, with in-app purchases available.
Is 9 Gaze free?
9 Gaze is free to download, with no in-app purchases.
Which has better reviews, Smart Optometry or 9 Gaze?
9 Gaze is rated higher. Smart Optometry averages 4.4 out of 5 from 529 ratings, while 9 Gaze averages 4.6 from 22 ratings.
Do Smart Optometry or 9 Gaze have ads?
Neither Smart Optometry nor 9 Gaze shows ads.
Which is updated more often, Smart Optometry or 9 Gaze?
Smart Optometry ships an update every 4 months, and 9 Gaze every 2 months. Most recently, Smart Optometry was updated on September 20, 2026 and 9 Gaze on August 27, 2026.

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