# Eye Chart Pro vs Kay iSight Test Professional

Eye Chart Pro and Kay iSight Test Professional both sit at 4.3 stars, but that hides the real split: 76% of Kay iSight Test Professional's written reviews are positive against 53% of Eye Chart Pro's. Kay iSight Test Professional also leads on ratings volume (10 vs 3). Eye Chart Pro's advantage is update cadence (every 3 months vs every 9 months) and iOS requirement (12.0 vs 18.6). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Eye Chart Pro sells 10 one-off in-app purchases and Kay iSight Test Professional sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.3 for Eye Chart Pro against 4.4 for Kay iSight Test Professional. Both are backed by a comparable volume of ratings — 3 and 10 respectively. Written reviews are what separate them: 53% of Eye Chart Pro's written reviews are positive against 76% of Kay iSight Test Professional's.

Eye Chart Pro ships an update every 3 months, Kay iSight Test Professional every 9 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | Eye Chart Pro | Kay iSight Test Professional |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/eye-chart-pro/id364802332/reviews) | **[4.4 (10 ratings)](https://appshunter.io/ios/app/kay-isight-test-professional/id1144082577/reviews)** |
| Number of ratings | 3 | **10** |
| Positive reviews | 53.0% of reviews | **76.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 29 MB | 22 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Dok LLC](https://appshunter.io/developer/293163442) | [Kay Pictures Ltd](https://appshunter.io/developer/408376964) |

## What reviewers say

### Eye Chart Pro

[App page](https://appshunter.io/ios/app/eye-chart-pro/id364802332)

This app provides a randomized visual acuity exam, functioning like a projector-based eye chart. It's useful for quick vision screenings, house visits, or when patients may have memorized standard charts. The app offers both Snellen and Tumbling E charts with randomization options.

**Highlights:** Randomizable Snellen Chart, Randomizable Tumbling E Chart, Randomize entire chart or line by line, Smooth interface with animations, Basic remote control, Metric / Feet functionality

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Amsler Grid in Portrait and Landscape. | $9.99 | one-time |
| Premium Home Edition of Eye Chart Pro | $19.99 | one-time |
| HOTV Chart | $19.99 | one-time |
| Sloan Letters Chart | $19.99 | one-time |
| Professional Version with ALL Features | $39.99 | one-time |
| Advanced Remote Control | $39.99 | one-time |
| All Charts | $39.99 | one-time |
| Sloan Duochrome Chart | $39.99 | one-time |
| Value Pack | $59.99 | one-time |
| Professional Package | $199.99 | one-time |


### Kay iSight Test Professional

[App page](https://appshunter.io/ios/app/kay-isight-test-professional/id1144082577)

This app measures and saves visual acuity for children and adults using optotypes and letters. It offers various test presentations, distances, and result formats, with options for remote testing on iPad.

**Highlights:** Measures visual acuity for near and distant vision, Uses Kay Picture optotypes and Sloan letters, Supports single and crowded presentations, Records, saves, and exports test results, Remote vision testing option on iPad, Child-friendly fixation targets

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month | $7.99 | per month |
| Year | $59.99 | per year |


## Frequently asked questions

### Is Eye Chart Pro free?

Eye Chart Pro is free to download, with in-app purchases available.

### Is Kay iSight Test Professional free?

Kay iSight Test Professional is free to download, with in-app purchases available.

### Which has better reviews, Eye Chart Pro or Kay iSight Test Professional?

Kay iSight Test Professional is rated higher. Eye Chart Pro averages 4.3 out of 5 from 3 ratings, while Kay iSight Test Professional averages 4.4 from 10 ratings.

### Do Eye Chart Pro or Kay iSight Test Professional have ads?

Neither Eye Chart Pro nor Kay iSight Test Professional shows ads.

### Which is updated more often, Eye Chart Pro or Kay iSight Test Professional?

Eye Chart Pro ships an update every 3 months, and Kay iSight Test Professional every 9 months. Most recently, Eye Chart Pro was updated on November 6, 2026 and Kay iSight Test Professional on November 6, 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.*