You can reach your matches and visitors by tapping the chat icon in the top right-hand corner of the screen.
Visitors are members who "sparked" a frame in your profile. If you reply to this member, or spark a frame within the chat, you become a match. This member will then move to your Matches section.
If a member only matches 1 or 2 images in one of your Top 3 frames, this member will be added to your Visitors section. Reply to this member to make them a Match.
If a member matches all 3 photos in one of your Top 3 frames, they will become an instant Match and go directly to your Matches section.
Swipe left or right to switch between matches and visitors.