Photo sharing app Snapchat has released a significant update to its iOS app today, which brings integration of its new “Snapchat Stories” feature to mobile devices. The new feature acts as a news feed on the app for the user and the user’s contacts, and adds pictures as they are taken to a user’s Snapchat Stories. The pictures from a user’s feed expire after 24 hours in order to make room for new photos to be taken. Snapchat Stories add Snaps together to create a narrative. When you add a Snap to your Story it lives for 24 hours before it disappears, making room for the new. Your Story always plays forward, because it makes sense to share moments in the order you experience them. Your Story never ends and it’s always changing.