The guys at Yes Theory are back with another challenge... To live in Europe for three days at no cost. What's the catch? Ammar and Matt must find food, shelter and a night out through Tinder alone. Although the app is used for dating, these guys test the limits as they search for locals in Amsterdam, Paris, and Barcelona. Thousands of swipes later and an impressive experience for the books, these two dudes couch surfed their way through Europe without paying a dime.