# DK vs Kay Amblyopia Tracker

The clearest difference is iOS requirement: DK at 10.0 against Kay Amblyopia Tracker's 14.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 12, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | DK | Kay Amblyopia Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 14 MB | 15 MB |
| Requires iOS | **10.0** | 14.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [swiss4ward Europe S.L.](https://appshunter.io/developer/1012882836) | [Kay Pictures Ltd](https://appshunter.io/developer/408376964) |

## What reviewers say

### DK

[App page](https://appshunter.io/ios/app/dk-hsai/id1356522462)

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

**In-app purchases:** none


### Kay Amblyopia Tracker

[App page](https://appshunter.io/ios/app/kay-amblyopia-tracker/id1505210585)

**In-app purchases:** none


## Frequently asked questions

### Is DK free?

DK is free to download, with no in-app purchases.

### Is Kay Amblyopia Tracker free?

Kay Amblyopia Tracker is free to download, with no in-app purchases.

### Do DK or Kay Amblyopia Tracker have ads?

Neither DK nor Kay Amblyopia Tracker shows ads.

### Which is updated more often, DK or Kay Amblyopia Tracker?

DK ships an update every 2 months, and Kay Amblyopia Tracker every 2 months. Most recently, DK was updated on October 12, 2026 and Kay Amblyopia Tracker on October 4, 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.*