# Eye Test vs Clarity by CREST

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.

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.

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.

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.

## The numbers

| Metric | Eye Test | Clarity by CREST |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/eye-test-visual-acuity/id1298005954/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clarity-by-crest/id6478376629/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Paid | **Free** |
| Best chart rank | **#198** | — |
| Size | 1 MB | 21 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roar Slot Nielsen](https://appshunter.io/developer/1298005953) | [Crest Trials Inc.](https://appshunter.io/developer/1732636966) |

## What reviewers say

### Eye Test

[App page](https://appshunter.io/ios/app/eye-test-visual-acuity/id1298005954)

**Currently charting:** #198 Top Paid · Medical (US App Store)

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:** Vision Pro support

**In-app purchases:** none


### Clarity by CREST

[App page](https://appshunter.io/ios/app/clarity-by-crest/id6478376629)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*