Amazon users are very high quality users. User engagement with edjing on Amazon is higher than on any other service.
No matter what service you build on, or who your audience is, Amazon has the tools and services that will empower you to build a great app. By using Amazon's developer portal, you can distribute your mobile apps, digital software and web-based services—to tens of millions of Amazon customers. You can also sell your mobile apps on Amazon devices, like Fire TV or Fire tablets.
Amazon pays developers 70% of the list price for all sales. The programme is free. You pay nothing to create a developer account, use Amazon APIs, and submit apps. And you'll be adding your app to a very active marketplace—the Amazon Appstore now has over 400,000 apps and games, is available in over 230 countries and territories, and on a multitude of devices.