"Daily Viewed Snaps" is a media metric — the number of media items opened — which means that a single snap sent to many people is counted multiple times. "Daily

"Daily Viewed Snaps" is a media metric — the number of media items opened — which means that a single snap sent to many people is counted multiple times. "Daily Viewed Snaps Unique Users" is the number of unique users who viewed a snap, i.e. a user metric.