Part of this success comes from the excellent matching algorithm. Match has each user answer a set of specific questions. The site will learn your preferences and suggest users that they feel are a good match for you.
The downside to Match is that free members will only get limited features. If you decide to spring for a paid membership I recommend getting the three-month package for around $20 per month.
That being said, Match is one of the best dating sites out there for finding a range of relationship types.
OkCupid is hands down, one of the best free dating sites on the market. OkCupid has been around for a long time but they've managed to stay relevant throughout the years.
Part of the reason for this is that the app allows people to really be themselves. The coolest feature of OkCupid is the ability to make your preferences super clear. You can choose political views, religious preferences, sexual orientations, and more.
On top of that, OkCupid is great for men, women, non-binary and transexual people. It may be one of the most inclusive online dating apps out there.