It also lets you know whether you have any mutual friends or shared interests on Facebook. Tinder is free to download and use, though there are some paid add-ons including the Tinder Plus subscription.If you like the look of someone, you simply swipe right. It's only available for i Phone or Android (there's no browser version available).
That does mean that matches might not be quite so perfect, but it won't cost you a penny to start using it.
You can choose to sign up for the paid-for subscription to get more insight into who likes you, browse invisibly, use advanced search options and see if your match has read your messages. We like the thinking behind Happn, a dating app that matches you with other users you've crossed paths with, whether it's on the way to work on in your favourite café.
In fact, half of all single people now use dating apps and sites, and one in five relationships begin online.
It's no surprise, then, that there are now hundreds of dating sites to choose from, and that's not even considering the wealth of apps that have appeared since Tinder rose to popularity.
If you find that you've crossed paths with someone, whether that be once or multiple times, you can look at their profile and use the heart button to say you're interested.