Developer's Description. The Amazon App for Windows 10 PC/Tablet allows you to shop just as you do on the web. Search for products using the Amazon App, and easily add them to your shopping cart. Fans of Amazon's Prime Video streaming service can now enjoy it through the official Windows 10 app on their desktop, laptop or tablet. The Prime Video app for Windows 10 is now available both in Canada and worldwide. It's a free download from the Microsoft Store. While you may wonder about.