There are some useful services that provide stats across digital newsstands
(Amazon Appstore, Apple App Store, Google Play, Windows Store).
Charts for All Newsstands
Provides app metrics for anyone who wants to compete in the mobile marketplace.
2. App Annie
2. iOSapp Stats
Easy access to all App Store stats in realtime, country by country, iPhone and iPad, Free and Paid, Grossing, New Apps and Genre Segmentation.
Top paid , Top free , Top grossing App in Newsstands
Charts for Apple App Store Newsstand
2. Twitter account App Store Charts @iPadEditions
Weekly updates on the iPad and iPhone grossing charts for magazines and newspaper apps on iOS Newsstand. Coverage includes USA & UK, Canada.
Top Grossing Apps Newsstand
Charts for Amazon
Amazon Best Sellers
Amazon most popular products based on sales. Updated hourly.