After transitioning from the clicking function Tinder initially used, Tinder became the first "swipe app", now a term to describe various apps that use swiping left or right to control what content the user sees in a browsing fashion.
Companion apps were being developed by different companies allowing users to, for example, use the user's heart rate to determine which direction to swipe instead of the user swiping with their hands.
The site also has verified profiles for public figures, so that celebrities and other public figures can verify they are who they are when using the app.
Instead of swiping right for a profile, the user swipes up.
If two users like each other it then results in a "match" and they are able to chat within the app.