How to install this app on multiple devices

Downloads from the Microsoft Store are linked to your Microsoft account. Once installed, you can launch this app directly from the Start menu. To install on a new device, please see steps below:

On the new device, launch the Microsoft Store app and log in using the same Microsoft account you originally used to purchase this app.
After you are logged in, search for this app. Instead of the buy button, you should see a message that indicates you already own the app and that you can install.
You will not be charged again to re-download apps you have already purchased as long as you are logged in using the same Microsoft account (this is very important)

This is a universal platform app where the install process is entirely managed by the Microsoft Store. More details available from https://support.microsoft.com/help/4000641