title: Listen and cancel notifications of other apps
body: <p>On Android, its possible to use <a href="https://developer.android.com/reference/android/service/notification/NotificationListenerService.html#onNotificationPosted(android.service.notification.StatusBarNotification)" rel="nofollow noreferrer">NotificationListenerService.onNotificationPosted</a> in combination with <a href="https://developer.android.com/reference/android/service/notification/NotificationListenerService#cancelNotification(java.lang.String)" rel="nofollow noreferrer">cancelNotification</a> to listen and cancel notifications programmatically.</p>
  
  <p>Does an API for something like that also exist on iOS?</p>