No controller whatsoever. My phone dings every 2 minutes or so about a message I've already read in the swipe down menu. You're telling me that a new update controls MY notifications, I don't have the option to choose ONE message notifying me ONCE? So annoying. If you want to be the best app, allow customization. Allow changing the color of chat bubbles. Allow user-custom backgrounds for conversations. You could change so many opinions by doing these simple things in an update. Until then..