DK vs Kay Amblyopia Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DK
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This new App focuses on making the life of dermatologists easier. While insurances and physicians want to accurately keep track of their HS patients, the numerous scores are a challenge in daily practice. Using this app, it is possible for the dermatologist to look at the lesions and easily document them on their mobile phone by simply clicking on the affected area and indicating the lesion. When the physician heads back to his desk, the most frequently used scores have been already calculated and are send per Email. With “copy and paste” an accurate description and all necessary scores can be inserted into the patient’s file.
Kay Amblyopia Tracker
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The Kay Amblyopia Tracker app lets eye professionals offer their patients a way to better understand and collaborate in their amblyopia journey by monitoring vision changes at home between eye test appointments. The app can only be accessed through a qualified eye professional, ensuring that a diagnosis and treatment plan are in place and ongoing. The test is simple and quick to do without any expertise. Once you’ve read the tutorial, just follow the on-screen instructions. The app displays the same letters and familiar pictures seen in a professional vision test, but with a unique testing process that is easy to use at home for children from 24 months of age. Regular home test scores are uploaded to a chart, making it easy to follow the child’s progress and giving useful feedback and encouragement Sharing the child’s progress chart with their eye professional could help to reduce the frequency of clinic appointments, so saving the time and costs. For patients: - Provides a fun, easy way to keep track of changes and improvements in your child’s amblyopia at home. - Gives you and your child a visual chart of their progress to encourage compliance with treatment. - Displays contact details for your child’s eye professional and an email link to them from the Test History Chart. - Tells you when you last tested and can be set to remind you when to test next. For eye professionals: - The app is configured to accurately display letter and picture optotypes that are validated for visual acuity measurement. - However, the scores given are not a visual acuity measurement, so ensuring no comparisons or treatment decisions are taken by the patient. - Access to the app test process is via activation codes provided only to qualified eye professionals and medical personnel. - Regular home testing and monitoring can aid patient understanding and compliance with treatment. - The progress chart can be shared with you, which may, in time, help you to decide on the frequency of follow up appointments. * Reference O’Connor, A., Waters, M., England, L., Milling, A. and Kay, H., 2021. Evaluation of a New Method to Track Changes in Vision at Home for Children Undergoing Amblyopia Treatment. British and Irish Orthoptic Journal, 17(1), pp.70–78. DOI: http://doi.org/10.22599/bioj.172
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | DK | Kay Amblyopia Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 10.0 — better | 14.1 |
| Further details — not scored | ||
| Size | 14 MB | 15 MB |
| Age rating | 17+ | 17+ |
| Developer | swiss4ward Europe S.L. | Kay Pictures Ltd |
In-app purchases
DK
No in-app purchases
Kay Amblyopia Tracker
No in-app purchases








