3Fun (3FUN) is a location-based mobile online dating application for Android and iOS. 3Fun is available in the United States, United Kingdom, Brazil,[1] the Netherlands,[2] and several other countries. As of May 2019, there were approximately 100,000 monthly downloads, and more than 2 million total downloads. In January 2022, 3Fun partnered with British security company DigitalXRAID to implement penetration testing.[3]