Comparison

Eye Test vs Clarity by CREST

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

Head to head
About

Eye Test

This application provides a visual acuity test based on the Tumbling E-test, using the logMAR scoring metric. It helps users assess their vision and provides results that can be shared with eye care professionals. The test ends if fewer than three answers are correct per line.

Highlights
  • Tumbling E-test (ETDRS based)
  • logMAR scoring metric
  • Decimal equivalent scoring
  • Test results sharing
  • Photo capture of tested eye
Features
Currently charting
Read full description

The Tumbling E-test(ETDRS based) is a test of visual acuity. The results are based on the logMAR scoring metric - the Line Scoring Method. The corresponding decimal equivalent is also included. For this app, logMAR measures range from -0.2 to 0.70 and the decimal equivalent from 0.2 to 1.58. A decimal score below decimal 1.0 is considered below normal, requiring a test by an optometrist or an ophthalmologist. Less than three correct answers per line of five will end the test. If this is the case for the first line no result is calculated. How to use the app: 1. Have a helper hold the device and swipe the screen in the direction you are pointing. 2. At a distance of 3 metres to the screen, ask your helper to start the test when seated and ready. Take your time. 3. Add a photo of the tested eye(s). 4. Share your result with your optometrist or ophthalmologist.

About

Clarity by CREST

This platform streamlines visual acuity certification processes for medical professionals. It combines a web dashboard for management with a mobile app for field data collection, ensuring standardized training and accurate examination lane assessments.

Highlights
  • Web dashboard for managing BCVA processes
  • Mobile app for field data collection
  • Examiner Certification workflow
  • Lane Certification workflow
  • ETDRS training protocol and videos
  • Equipment and lane verification
Read full description

The BCVA Remote Solution Platform consist of a web dashboard, to manage Best Corrected Visual Acuity (BCVA) process, and a mobile application to collect data directly on the field. Both components are synergized to provide a remote solution for BCVA service certification needs. Site staff and clinicians use this platform for administering training and certification to experienced clinicians who perform BCVA (refraction and visual acuity) procedures by utilizing a stepwise ETDRS training protocol and to assess the examination lanes for complete equipment and accurate lane configurations. The web dashboard allows management of certification activities at the site level and permits the Certification Officer to actively evaluate completed certification tasks or activities by BCVA examiner and view and evaluate video assessments of examination lanes as completed by Site Coordinator. The key features of web dashboard allow certification requests management; ETDRS lane equipment management and BCVA examiner training management. The key features of the mobile App include an Examiner Certification workflow (EC workflow) and a Lane Certification workflow (LC workflow). The EC workflow includes ETDRS training protocol documents, training video and BCVA examiner evaluation or quiz while the LC workflow includes equipment verification, lane distance and light verifications. This convenient and easy semi-automated method of lane certification ensures a more consistent and standardized process, and the real time remote feedback mechanism guarantees accurate measurements. The examiner certification experience using this combined web dashboard and mobile application elevates examiner proficiency through continuous monitoring. The overall benefits of the system are time efficiency, accuracy improvement, cost-effectiveness, and enhanced subject/patient outcomes.

Screenshots

Eye Test1 screens
Clarity by CREST4 screens

Verdict

The call

The clearest difference is price: Clarity by CREST at Free against Eye Test's $1.99. Clarity by CREST also leads on rating (5.0 vs 3.9) and update cadence (weekly vs every 6 months). Eye Test's advantage is chart position (#198 vs unranked) and ratings volume (8 vs 1). On ads, in-app purchases 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

Clarity by CREST is free to download; Eye Test costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Clarity by CREST holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Eye Test has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Eye Test ships an update every 6 months, Clarity by CREST weekly. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

Scorecard7 real differences · 4 level
Eye Test versus Clarity by CREST: the parameters behind the verdict, then further details
ParameterEye TestClarity by CREST
Price$1.99Free — better
Rating3.9 (8 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings8 — better1
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#198 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.016.0 — better
Further details — not scored
Size1 MB21 MB
Age rating4+4+
DeveloperRoar Slot NielsenCrest Trials Inc.

Customer experience

Eye Test

All ratings8 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Clarity by CREST

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Eye Test

No in-app purchases

None

Clarity by CREST

No in-app purchases

Questions

Is Eye Test free?
Eye Test costs $1.99, with no in-app purchases.
Is Clarity by CREST free?
Clarity by CREST is free to download, with no in-app purchases.
Which has better reviews, Eye Test or Clarity by CREST?
Clarity by CREST is rated higher. Eye Test averages 3.9 out of 5 from 8 ratings, while Clarity by CREST averages 5.0 from 1 ratings.
Do Eye Test or Clarity by CREST have ads?
Neither Eye Test nor Clarity by CREST shows ads.
Which is updated more often, Eye Test or Clarity by CREST?
Eye Test ships an update every 6 months, and Clarity by CREST weekly. Most recently, Eye Test was updated on October 29, 2026 and Clarity by CREST on October 21, 2026.

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