Rad has also stated that Tinder filled a gap for social sites for meeting strangers, rather than connecting with people a user already knows.
By May 2013, Tinder was one of the top 25 social networking apps available on the web based on frequency of use and number of users.
It has met with controversy over limiting the number of "likes" a free user can give in a certain amount of time, as well as charging prices for different age groups.
As of late 2014, an estimated 50 million people use the app every month with an average of 12 million matches per day.
Rad has stated that the impetus for the app was his observation that "no matter who you are, you feel more comfortable approaching somebody if you know they want you to approach them." He believed that a "double opt-in" system could be created to potentially alleviate that stress.
It then allows the user to either swipe right or left.
Tinder says that Super Likes makes it three times as likely for users to find a match.
However, once you have matches on the app, you were able to send "Tinder Moments" to each of a user's matches at once, allowing each match to like or not like the photos.
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.
Initially, instead of a swiping motion, users would click on either a green "heart" or red "X" to select or move on from the photos shown.