Find Newsstand apps. Tap Newsstand to reveal the shelf, then tap Store. When you purchase a Newsstand app, it's added to the shelf. After the app is downloaded, open it to view its issues and subscription options. Subscriptions are In-App purchases, billed to your store account.

Turn off automatic updates. Apps update automatically over Wi-Fi, unless you turn off the option in Settings > iTunes & App Store > Automatic Downloads.