They surveyed a group of about 100 undergrads, who said they were interested in meeting a partner through online dating.
The group thought they were helping researchers test a new dating app.
What happens to relationships when finding a date is as easy as requesting a ride or ordering take-out?
When it comes to online dating, this effect is magnified.
Each has millions of members and full-fledged apps you can download on i OS and Android.
Tinder's the biggest thing to shake up online dating since "You Got Mail." It damn near invented the idea of right-swiping for "yes" and has evolved from its original "hookups-only" origin to a more standard dating app.
Here's a short list of the most popular dating apps you can download.
While some are just apps, a few also have desktop sites you can log into on your computer -- and there's no shame in using more than one service at a time.