Comparison

eETDRS Visual Acuity 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

eETDRS Visual Acuity Test

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eETDRS Remote Visual Acuity Testing app for X06 study.

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
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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

eETDRS Visual Acuity Test4 screens
Clarity by CREST4 screens

Verdict

The call

The clearest difference is update cadence: Clarity by CREST at weekly against eETDRS Visual Acuity Test's every 3 months. eETDRS Visual Acuity Test's advantage is iOS requirement (12.0 vs 16.0). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

eETDRS Visual Acuity Test ships an update every 3 months, Clarity by CREST weekly. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 7 level
eETDRS Visual Acuity Test versus Clarity by CREST: the parameters behind the verdict, then further details
ParametereETDRS Visual Acuity TestClarity by CREST
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size36 MB21 MB
Age rating17+4+
DeveloperRino Enterprises LLCCrest Trials Inc.

In-app purchases

None

eETDRS Visual Acuity Test

No in-app purchases

None

Clarity by CREST

No in-app purchases

Questions

Is eETDRS Visual Acuity Test free?
eETDRS Visual Acuity Test is free to download, with no in-app purchases.
Is Clarity by CREST free?
Clarity by CREST is free to download, with no in-app purchases.
Do eETDRS Visual Acuity Test or Clarity by CREST have ads?
Neither eETDRS Visual Acuity Test nor Clarity by CREST shows ads.
Which is updated more often, eETDRS Visual Acuity Test or Clarity by CREST?
eETDRS Visual Acuity Test ships an update every 3 months, and Clarity by CREST weekly. Most recently, eETDRS Visual Acuity Test was updated on October 14, 2026 and Clarity by CREST on October 21, 2026.

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