Sean Rad is an American entrepreneur, widely recognized for founding the dating application Tinder. Launched in 2012, Tinder rapidly gained traction, becoming the top-grossing app in 99 countries by 2015 and the highest-grossing app in Apple's App Store by 2017. Rad holds 15 patents for his innovations, notably including the patent for Tinder's distinctive "double opt-in" system, which requires users to match before exchanging messages.