The Localytics Java SDK by Localytics can implement analytics features into Android applications with the aim to improve marketing efforts. The SDK guide gives the option to integrate manually and automatically. To begin development, see the initial requirements on the site.
Amazon has released an Appstore Sales Reporting API that allows developers to download sales reports programmatically. Developers use the API to retrieve monthly sales data as compressed CSV files. The CSV file contains item information such as marketplace, invoice ID, item name, and sales price.