twitter:card = app

• Subject: Wikipedia official mobile app (iOS & Android)
• twitter:card: app
• twitter:app:name:iphone / :id:iphone: Wikipedia / 324715238 (App Store)
• twitter:app:name:ipad / :id:ipad: Wikipedia / 324715238 (App Store)
• twitter:app:name:googleplay / :id:googleplay: Wikipedia / org.wikipedia (Play Store)
• twitter:app:country: US