Tinder has changed the online dating game. But even as one of the most popular dating apps, there are some mistakes that way too many users make. From falling for fake profiles to sabotaging your chances of getting matched, here are some common Tinder mistakes you should avoid at all costs. What Is Tinder and How Do I Use It? Tinder is a dating app for smartphones that lets you swipe through people’s profiles in an effort to find a potential romantic partner. You can provide the app with a distance you are willing to travel up to 100 miles, and from there, you “like” or “pass” people.