Key Takeaways

Ysos, the Brazilian dating app tailored to swingers and other nonmonogamous singles and couples, is bringing its mission to provide “practical, discreet, and safe” nonmonogamous relationships to the U.S. and Latin America. 

With over 50,000 new U.S.-based users to its name, Ysos arrives in the U.S. amid growing interest in ethical nonmonogamy. For evidence of this, look no further than Feeld, the platform that calls itself the “dating app for the curious”: The app’s revenue jumped 26% in 2024 alone, signalling a rising interest in nonmonogamy among modern daters. 

Feeld, #Open, SLS app, and Ashley Madison are just a few of the dating and relationship apps that cater to nontraditional singles and couples in the U.S. By joining their ranks, Ysos is adding to the increasingly crowded market for ENM apps. 

Ysos Joins An Ever-Inclusive U.S. Dating App Market 

By bringing Ysos to international users, the app is not only contributing to the crowded and competitive ENM market. It’s also highlighting the major role that dating apps tailored to niche communities play in modern daters’ lives. 

“[Ysos is] for open-minded people, but it’s especially built for couples who want to do things together,” Ysos CMO Mayumi Sato told DatingAdvice in 2024. “And our community is pretty straightforward…They want to have fun.”

From LGBTQ+ daters to couples seeking a third (or fourth), niche dating communities are quickly growing in profitability, especially in the U.S. Sato said the Ysos’s Brazilian origins give the app an edge in the competitive ENM market. 

“The Brazilian platform absorbed influences from the international liberal scene and gave back to the global market a product that’s even more sophisticated, inclusive, and in tune with the transformations of contemporary behavior,” Sato said. 

How, exactly, has “contemporary behavior” been transformed? 

As niche demos flourish, our definition of the average online dater has become far more inclusive. Swingers, polyamorous couples, and people in open-relationships are just as much a part of the dating industry as monogamous couples, and they’re seeking representation from dating apps, too. 

They don’t only share an interest in nontraditional relationship dynamics, but they also share the values that make unconventional relationships thrive. 

Clear communication, a strong foundation of trust, a mutual curiosity about love and sexuality — niche apps that cater specifically to these values have an opportunity to grow in the U.S. and beyond, hence Ysos’s expansion into these regions. 

ENM Dating Isn’t as Niche as it Used To Be 

And curiosity about unconventional relationship dynamics has grown since last year, according to Match Group and the Kinsey Institute’s annual Singles in America study. 

“All age groups are showing interest in non-monogamy,” Dr. Amanda Gesselman, Director of Sex and Relationship Science at Match, told DatingNews. But Gen X couples are showing a particularly high interest:

“These are singles who have already experienced long-term relationships or marriage, and are now asking themselves, ‘What actually works for me?’”

Our in-house op-ed writer, Hayley Folk, has made it clear that Americans’ curiosity about ethical nonmonogamy is not a passing fad. “If you’re a part of the dating industry, you should be treating it less like a 70s swinger fad or fast-fading trend, and more like a growing way of relating that is here to stay,” she explained. 

Polyamory, Folk added, is “a growing market that more of your users need and deserve access to. Dare I say, dating apps that ignore it risk being left behind. As someone who only uses dating apps that are inclusive to polyamory, I can say it!”

Ysos stands out in the crowded ENM app market by offering discretion and safety in an industry stifled by taboo. A combination of nontraditional relationship services and high-quality safety measures resonates with modern users. 

With over 1.2 million users and counting in Brazil, Ysos is poised to generate just as much engagement in the U.S. and Latin America. After all, if the rise of dating apps that cater to ENM relationships tells us anything, it’s that nontraditional relationships are just that: nontraditional — not necessarily uncommon.