# Kay iSight Test Professional vs Bladder Diary & Chart

Kay iSight Test Professional and Bladder Diary & Chart are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Kay iSight Test Professional sells 2 in-app purchases, starting at $7.99 per month and Bladder Diary & Chart sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Kay iSight Test Professional | Bladder Diary & Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (10 ratings)](https://appshunter.io/ios/app/kay-isight-test-professional/id1144082577/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Monetization | Freemium | — |
| Size | 22 MB | 2 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Kay Pictures Ltd](https://appshunter.io/developer/408376964) | [Conor Hannah](https://appshunter.io/developer/6811069560) |

## What reviewers say

### 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 |


### Bladder Diary & Chart

[App page](https://appshunter.io/ios/app/bladder-diary-and-chart/id6811376900)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bladder Diary unlocked | $4.99 | one-time |


## Frequently asked questions

### Is Kay iSight Test Professional free?

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

### Is Bladder Diary & Chart free?

Bladder Diary & Chart is free to download, with in-app purchases available.

### Do Kay iSight Test Professional or Bladder Diary & Chart have ads?

Neither Kay iSight Test Professional nor Bladder Diary & Chart shows ads.

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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.*