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Kosmi
Techstars '22Toronto, CA · 3 employees on LinkedIn · 2 known investors
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Kosmi is a free platform for group video watch parties, gaming sessions, and virtual hangouts that integrates with popular streaming services and games. It serves long-distance friends, couples, and remote teams seeking a unified space for shared entertainment and communication.
Also known as Kosmi Inc.
Founders & leadership
Investors · 2
How we know: Brunnur Ventures GP's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: the Techstars portfolio · funding news · open dataset · Top 3000 Accelerator Startups (no YC) 2026-08 · open dataset · 5k.vc investor directory · Not right? Tell us
Company profile
researched Sep 2026Kosmi operates a browser-based entertainment platform for online hangouts, letting groups watch video, play games, listen to music and talk over integrated voice, video and text chat in a shared room. Users create a room, share a link and join without downloads or sign-up; the company positions the product as an alternative to browser-extension watch-party tools such as Netflix Party or Teleparty. A virtual browser technology keeps playback synchronized across participants, and the service states compatibility with Netflix, YouTube, Hulu, Disney+, HBO Max, Amazon Prime, Twitch and arbitrary video URLs.
Beyond video playback, the platform bundles shared browsing, screen sharing, link sharing, file sharing and native integrations, plus customizable private rooms themed as living rooms, drive-ins, games rooms, coffee shops or pubs. A public lobby exposes open rooms for users joining alone. Kosmi is offered on desktop and tablet browsers, with a companion mobile app published on Google Play by Kosmi Inc.; the website recommends desktop or tablet for the full feature set. Typical use cases described include long-distance movie nights, virtual dates, game nights and remote team socializing.
Business model
Kosmi offers the platform to consumers at no cost, stating there are no subscriptions or hidden fees. The mobile app listing indicates the app may share financial information with third parties, and some user reviews reference a premium feature prompt appearing during use.
The website states the service is completely free with no subscriptions or hidden fees.
Traction
The Android application reports more than 500,000 downloads and a 3.6 star rating from roughly 1,120 reviews, with the listing last updated August 21, 2026.
Latest developments
The Android app listing was updated on August 21, 2026. User reviews raise recurring issues with audio mixing between voice chat and media playback, video playback reliability on mobile, and prompts for a premium feature.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Kosmi positions itself against browser-extension watch-party products such as Netflix Party and Teleparty by requiring no extension and bundling video chat and games into one room. It participated in the 2022 Comcast NBCUniversal LIFT Labs Accelerator, powered by Techstars, where all eleven startups in the cohort announced partnerships with Comcast, NBCUniversal or Sky.
Differentiators cited include no browser extension or download requirement, no sign-up, automatic synchronization via virtual browser technology, built-in voice and video chat alongside playback, and a single room combining video, games, music, screen sharing and file sharing with customizable themed spaces.
Technology
The product runs entirely in a web browser without extensions or downloads. A virtual browser technology synchronizes playback of streaming video across all participants in a room, and voice, video and text chat are integrated alongside screen sharing, shared browsing and file sharing. A mobile application is distributed through Google Play.
Go-to-market
Distribution is link-based and self-serve: a user creates a room and invites others by sharing a URL, with no sign-up required. A public lobby surfaces open rooms, communities can be invited into rooms, and dedicated landing pages target watch-party search intent as an alternative to extension-based tools. The mobile app is distributed via Google Play.
Long-distance friends, couples in long-distance relationships, gaming and community groups, and remote teams looking for a shared space to watch, play and talk together.
Geography
The company lists a physical address at 176 Yonge St, 6th Floor, Toronto, Ontario, Canada, and Kosmi Inc. lists a developer address at 940 Atlantic Ave, Brooklyn, New York, United States, with an Icelandic contact phone number. An accelerator portfolio profile lists the company in Reykjavik, Iceland. The service is used internationally, with user reports from Chile and the United States.
History
Kosmi was selected for the 2022 Comcast NBCUniversal LIFT Labs Accelerator, powered by Techstars, a cohort of startups that each announced partnerships with Comcast, NBCUniversal or Sky. The company continues to publish its consumer platform and an Android application under the entity Kosmi Inc., with the app listing updated in August 2026.
Risks & controversies
Public app-store reviews report technical problems including merged audio levels between voice chat and media, black screens and degraded video playback on mobile. Some reviewers object to premium feature prompts appearing in a product marketed as free. The Google Play data-safety disclosure states the app may share financial information with third parties and may collect location and personal information.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Related companies · 3
Companies working in the same space as Kosmi.
Timeline · 2
launches, deals, and filingsThe Kosmi Android application listing on Google Play was updated, published by Kosmi Inc.
Kosmi was part of the 2022 Comcast NBCUniversal LIFT Labs Accelerator cohort; all eleven startups in the class announced partnerships with Comcast, NBCUniversal or Sky.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 8
primary sources listed
- Kosmikosmi.io · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Kosmi do?
- Kosmi is a free browser-based platform for synced watch parties, games and video chat with friends or remote teams.
- Who founded Kosmi?
- Kosmi was founded by Haukur Rósinkranz.
- Who are Kosmi's investors?
- Kosmi's investors include Brunnur Ventures GP, Techstars.
- Where is Kosmi headquartered?
- Kosmi is headquartered in Toronto, CA.