In reality, several factors play into which site or app works best for any particular person. Age is a big one, as can be the type of relationship desired. Crunching the numbers highlighted a few clear winners for each group. Click on the category you fall into, then check out which of these sites and apps consistently work well for guys just like you! Tinder is the most popular dating app in the US - you probably have a buddy who met his girlfriend on it. Using the app is free, with the option to upgrade to Tinder Plus or Tinder Gold. Click here for 7 Tinder icebreakers that actually work.