Tinder users are looking for love, according to new survey

Tinder's sociologist Dr. Jess Carbino says users might have more success on the app if they smile in their profile photo.
3:00 | 04/25/17

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Transcript for Tinder users are looking for love, according to new survey
You know, the rules of tinder are simple. Swipe right if you like smrngs left if you don't. The site claims it's a lot more complicate than that. And now the app says it's evolving beyond that simple swipe to help users find true love. Here's ABC's Nick watt. Definitely takes a lot for me to step out of my comfort zone. But you're not going to get anywhere in life by sitting back and waiting for things to happen. Reporter: Charlotte's looking for life, about to meet a tinder match. You know the famous slash infamous hookup swipe right if you like app. Here's the dude. I hope I'm not revealing any sort of guy code here, but I think the general male approach to tinder is swipe right continuously because you're not going to get a lot of matches in return. How are you? Good to see you. Reporter: In an increasingly crowded marketplace, tinder is trying to stay ahead of the game by making more top quality matches. It's all about innovating. There's 600 million single people on smartphones. Tinder by far is the leader in the market 37. Reporter: Marking five years in the game, tinder just conducted a survey. They say 80% of tinder users are actually looking for a long-term relationship. Instant reaction is oh, that's just for hooking up, that's just for people after a little bit of slap and tickle on a Friday night. Oh, my god. Are you -- We've created over 20 billion connections since we started the app. Connections that have resulted in friendships, marriages, dates. Our data tells you Thad you're wrong, Nick. Okay. Reporter: Dr. Jess carbino is tinder's in-house sociologist and she's listening in on Charlotte's date. Let's see what happens. Grew up in Wisconsin. Never been FILIP. It's just like Montana but without the mountains and the reasons to visit. Reporter: Banter. They're bringing up their backgrounds. Which is always really important. Reporter: Dr. Jess conducted a survey. Remember, it is theirs, not ours. We can't vouch for it or its results. Online daters are 26% more likely to have had a serious long-term relationship than their offline counterparts. Reporter: And they say 82% of men on tinder believe fidelity is important. Offline daters apparently 71%. If you had discovered that tinder users have zero interest in commitment, you'd have kept all of that to yourself? I think as a social scientist I have a responsibility to the public to talk about data in a way that's meaningful and very accurate. Reporter: Survey says 70% of online daters always use protection. Offline, 63%. All these myths that we have about modern dating are really hooey. Tinder right now is probably the easiest way in the world to meet someone new. But now we want to make it's easiest place in the world to actually get to know that person. Reporter: Based on feedback, the app is adding bigger buyers, links to social media, and beyond the photo they say education and age are what users care about most. Other dating apps like hinge or ditch the swipe altogether to distance themselves from the frivolous hookup thing. We really agreed that swipe culture, hookup culture, swiping apps in general had really changed dating for the worse. Reporter: Hinge markets itself as high-end and now charges a fee. It's people who are actually invested in meeting people as opposed to, again, like the hookup culture just swiping like oh, she's got, I'm going to go out with her. Reporter: Tinder is sticking with the swipe. Because it actually mirrors how we think. It's nur lojically and biologically based. Zplz that frightening. If you don't wear a hat you diminish your chances of being swiped right. It hinders your eye. Glasses are going to hinder your chances of being swiped right by 15%. And smile. You signal that you're approachable and you increase your likelihood of being swiped by 14%. Reporter: Remember, Charlotte's on that date. What's with the phrase Virginia is for lovers? You know, you're really putting me on the spot with that one. She's blushing. She's turning away. And while I often would not recommend turning away on a date, her turning away is signaling that she's a little nervous, a little embarrassed but having a wonderful time. Reporter: Earlier Dr. Jess appraised Charlotte's profile. Not bad. Facing forward is also incredibly critical. Reporter: That's a disaster. There is a guy with his hand around your shoulder. Most men don't want to think about your old boyfriend when trying to become your new boyfriend. Must love dogs. Reporter: Bio needed work. Charlotte, you are an interesting, intelligent, charismatic individual who has a really wonderful story to tell. You're not telling people who you are and what you're about and creating such a good opportunity to connect with somebody at a deeper level. The smarter tinder gets the bigger it gets, the larger audiences, the better we get at suggesting the one or two or three people that we think are perfect for you. Reporter: Tinder started out as a few guys on a couch in a conference room. Now it's 200-plus people in a whole building here on sunset boulevard. So what will tinder look like in another five years? You may be walking down the street, siri or the tinder assistant speaks in your ear and says SHAWN, you know, there's a girl down the street that we think you might be interested in, you're both free tomorrow night, do you want me to set up a date? Reporter: Meantime, back to Charlotte. Well, cheers to that. Absolutely. That's a start. Cheers. You said you like the outdoors. Yeah, I like the outdoors. But I haven't seen it since I moved here. Reporter: Dr. Jess is break cover. I'm Dr. Jess from tinder. Hi, Dr. Jess. Good to meet you. Hey, Charlotte. Good to see you guys. You guys are doing such a good job. I love watching you guys have this witty rapport and banter between the two of you. You guys have been doing a good job connecting about the things you talked about earlier in your bios and really getting to know each other. I'm glad you think so. I was worried. Tinder is seeking a perfect match. But that's really as far as any app can go. What happens after that is still the same thing that Shakespeare's been talking about. Reporter: Charlotte and sunny. I think it went well. I never felt like was trying to find something to say. It felt super comfortable actually. I would love to go on a second date. I think there could be a second date. We had a good chat. Reporter: Star-crossed or not. There isn't an algorithm for that. Not yet. I'm Nick watt for "Nightline" in

This transcript has been automatically generated and may not be 100% accurate.

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