Slingshot does let you send a shot to just one person, but the app doesn’t really encourage it. Slingshot’s killer feature is its Select All button, a button Snapchat diehards have begged for that lets you send a photo to all of your friends at once. Snapchat has been adamant about leaving out the much-requested feature, and for a good reason. If you give users the ability to select all, they’ll do it all the time, which potentially lessens the importance of every push notification you get. In my experience testing Slingshot this past weekend, I’ve received a ton of notifications. Facebook tells me that in their testing of the app in a much larger group, they might receive dozens of Slingshot notifications per hour.