This is represented in the app with a (default) fire Emoji and number. The lowest number that a user can get is 3. To get a ‘Streak’, two users must send each other at least 1 Snapchat each in 24 hours. Users can change the default Emoji in your settings. The emoji will change to an hourglass if the Snap Streak is about to end.
It’s worth noting that many users see the number of the streak as being related to the strength of a friendship (Higher streak=Better friends.) Often, users will send a snap saying ‘Streaks’ to many, if not all, of their friends every day in order to make more streaks.
Click on the ghost or Bitmoji at the top of the Camera screen to find not only a user’s snapcode, username, star sign, favicon, and settings but also their Trophy Case.
Trophies appear as emojis and show a lock emoji until each achievement has been unlocked. These trophies can be achieved for a range of reasons, but Snapchat tries to keep new trophies a secret to encourage users to explore the app. For example, if a user sends 50 black and white Snaps they will get the panda trophy. If they apply 2 filters to 1 snap, they will get a peace emoji.