The King-Devick In Association With Mayo Clinic's K-D Test Pro app is intended ONLY for users with an existing King-Devick Online account.

If you do not already have an active King-Devick Online account, do not purchase this app.

This app will only run on a pre-qualified list of devices as we have to calibrate the display size of the test cards to match the display of each class of tablet.

This app requires a minimum resolution of 1280x800 on a 10.1" tablet.

We currently support the Samsung Note 10.1 1280x800 tablet, amongst other. If you install the application and your tablet is not supported you will be given the option to email us your tablets details so we can add it to our list of supported tablets in a later update.