--- title: "Ysos — Dating Platform | DII | Dating Industry Insights" description: "Dedicated platform for non-monogamous, polyamorous, and open-relationship dating founded 2023. Alternative relationship structure community Landscape." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "name": "Ysos", "url": "https://ysos.app", "description": "Ysos is the dedicated dating platform for non-monogamous, polyamorous, and open-relationship individuals, providing inclusive community and matching infrastructure for users explicitly seeking alternatives to traditional monogamous partnership models. The platform's core differentiation emphasizes explicit relationship-type declaration—users specify interest in polyamory, swinging, open relationships, or other non-monogamous arrangements—enabling transparent matching and community formation around shared relationship philosophy.\n\nYsos' privacy and security infrastructure includes phone number verification ensuring authentic profiles, PIN-protected secure lock preventing unauthorized access, private photo gallery visible only to approved contacts, and comprehensive community guidelines governing respectful communication. The platform's messaging functionality operates on mutual-like reciprocity (messaging free after matching), reducing unsolicited outreach and harassment compared to open-messaging platforms.\n\nYsos's community features including moderated forums and interest-based group chats facilitate peer learning, experience sharing, and relationship support among non-monogamous users, positioning the platform as community infrastructure beyond transactional matching. Available across US markets with geographic expansion, Ysos addresses underserved market segment of non-monogamous individuals requiring platform transparency and community support explicitly unavailable on mainstream dating applications designed around monogamous partnership defaults.", "foundingDate": "2023", "logo": "https://www.datingindustryinsights.com/favicon.png", "address": { "@type": "PostalAddress", "addressCountry": "UK" }, "sameAs": [ "https://ysos.app" ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.datingindustryinsights.com/" }, { "@type": "ListItem", "position": 2, "name": "Companies", "item": "https://www.datingindustryinsights.com/companies" }, { "@type": "ListItem", "position": 3, "name": "Ysos" } ] } ] --- [![Dating Industry Insights](/assets/dii-logo-footer-B-hNTbau.webp)](/)[A High Intent Media Brand](https://www.highintentmediagroup.com) [About](/about) [Companies](/companies "Dating App Companies") [Products](/directory "Dating Products & Features") [People](/people "Industry People & Executives") [News](/news "Dating Industry News") [Reports](/reports "Market Reports & Data") [Resources](/resources "Industry Resources") Log InRegister Free Trending [Ofcom's Compliance Ultimatum: Dating Platforms Can't Wait for 2027](/news/ofcom-warns-online-safety-measures) | [Surf's Fitness Race Dates: Strategic Innovation or Marketing Stunt?](/news/surf-expands-events-partnership-hyrox-globally) | [Duo's ₩345M Fine: A Warning Shot for Matchmaking's Opaque Promises](/news/matchmaker-duo-fined-over-misleading-ads) | [EliteSingles' Resurrection: Brand Equity vs. Network Effects](/news/elitesingles-relaunches-under-new-ownership) | [Fake Dating Apps Poison User Trust: A Crisis for Startups](/news/fake-dating-app-apk-user-concerns) [Home](/)[Companies](/companies)Ysos ![Ysos logo](https://img.logo.dev/ysos.app?token=pk_K6hdbPRcTQSnsRNEiZ-Ymg&size=128&format=png&fallback=monogram) # Ysos dating-platform Ysos is the dedicated dating platform for non-monogamous, polyamorous, and open-relationship individuals, providing inclusive community and matching infrastructure for users explicitly seeking alternatives to traditional monogamous partnership models. The platform's core differentiation emphasizes explicit relationship-type declaration—users specify interest in polyamory, swinging, open relationships, or other non-monogamous arrangements—enabling transparent matching and community formation around shared relationship philosophy. Ysos' privacy and security infrastructure includes phone number verification ensuring authentic profiles, PIN-protected secure lock preventing unauthorized access, private photo gallery visible only to approved contacts, and comprehensive community guidelines governing respectful communication. The platform's messaging functionality operates on mutual-like reciprocity (messaging free after matching), reducing unsolicited outreach and harassment compared to open-messaging platforms. Ysos's community features including moderated forums and interest-based group chats facilitate peer learning, experience sharing, and relationship support among non-monogamous users, positioning the platform as community infrastructure beyond transactional matching. Available across US markets with geographic expansion, Ysos addresses underserved market segment of non-monogamous individuals requiring platform transparency and community support explicitly unavailable on mainstream dating applications designed around monogamous partnership defaults. UK Founded 2023 [Website](https://ysos.app) [![Mayumi Sato headshot](https://wljexrfnabxcmtcyztnv.supabase.co/storage/v1/object/public/profile-images/9dbc5bd2-fbfb-4ff2-9905-9e887701892a.jpg) Mayumi Sato Founder ](/people/mayumi-sato) [News Coverage](#coverage) ## Ysos Key People [![Mayumi Sato headshot](https://wljexrfnabxcmtcyztnv.supabase.co/storage/v1/object/public/profile-images/9dbc5bd2-fbfb-4ff2-9905-9e887701892a.jpg) Mayumi Sato Founder ](/people/mayumi-sato) ## Latest Ysos News [View all coverage →](/news?company=ysos) [ ### Ysos's Latin America Gamble: Can Non-Monogamy Scale Across Borders? Ysos has accumulated 1.2 million registrations in Brazil and claims 50,000 US users since launching in late 2024 The Brazilian dating app is expanding into six new Latin American markets: Mexico, Colo… Daily News Wire 27 Oct 2025 ](/news/brazilian-free-love-app-ysos-expands)[ ### Ysos Bets on Revealed Preferences. Can It Outperform Match Group? Ysos has 3 million registered users globally and is now expanding into the US market Parent platform Sexlog has analysed behavioural data from 23 million users over a decade Mobile acquisition costs a… Financial & Investor 24 Jun 2025 ](/news/qa-with-mayumi-sato-ysos-cmo) ## Companies Similar to Ysos [![222 logo](https://img.logo.dev/222.place?token=pk_K6hdbPRcTQSnsRNEiZ-Ymg&size=80&format=png&fallback=monogram)222 Dating Platform ](/companies/222)[![9count logo](https://img.logo.dev/name/9count?token=pk_K6hdbPRcTQSnsRNEiZ-Ymg&size=80&format=png&fallback=monogram)9count Dating Platform ](/companies/9count)[![Ailo logo](https://img.logo.dev/ailoapp.com?token=pk_K6hdbPRcTQSnsRNEiZ-Ymg&size=80&format=png&fallback=monogram)Ailo Dating Platform ](/companies/ailo)[![Aisle logo](https://img.logo.dev/aisle.co?token=pk_K6hdbPRcTQSnsRNEiZ-Ymg&size=80&format=png&fallback=monogram)Aisle Dating Platform ](/companies/aisle)[![BeeDee logo](https://img.logo.dev/beedee.com?token=pk_K6hdbPRcTQSnsRNEiZ-Ymg&size=80&format=png&fallback=monogram)BeeDee Dating Platform ](/companies/beedee)[![Betterhalf.ai logo](https://img.logo.dev/betterhalf.ai?token=pk_K6hdbPRcTQSnsRNEiZ-Ymg&size=80&format=png&fallback=monogram)Betterhalf.ai Dating Platform ](/companies/betterhalfai) ![Dating Industry Insights](/assets/dii-logo-footer-B-hNTbau.webp) B2B intelligence for the online dating industry. Part of [High Intent Media Inc](https://www.highintentmediagroup.com) [in](https://www.linkedin.com/company/dating-industry-insights)[](/rss.xml) ### Explore - [News](/news) - [Companies](/companies) - [People](/people) - [Products](/directory) - [Resources](/resources) - [Data & Intelligence](/data) - [Regulation](/regulation) - [Glossary](/glossary) ### Contact - [About](/about) - [Editorial Standards](/about/editorial-standards) - [Corrections](/about/corrections) - [Ownership & Funding](/about/ownership-funding) - [Editorial Contact](/contact?subject=Editorial+Inquiry) - [Advertising & Partnerships](/contact?subject=Advertising+%26+Sponsorship) - [Press](/press) - [Submit a Listing](/contact?subject=Directory+Listing+Request) - [Sitemap](/sitemap.xml) © 2026 Dating Industry Insights. All rights reserved. 500 Paterson Plank Rd STE 31016, Union City, New Jersey, 07087, USA [Contact Us](/contact) · [Privacy Policy](/privacy) · [Terms of Use](/terms) · [Cookie Policy](/cookie-policy)