WatchUp vs Kosmi: Which Netflix party alternative fits better?

WatchUp and Kosmi both support watching together, but they are separate products with different supported services and social features. WatchUp synchronizes a supported video player in your desktop browser. Check each service for its current device and platform support.

When Kosmi is the better choice

Kosmi may fit better if you want its browser-based social rooms, games, and built-in communication features. Availability can vary by device, content source, and current Kosmi plan.

When WatchUp fits better

WatchUp fits better if you want to synchronize a supported player in your own desktop browser, use end-to-end encrypted live text chat, or self-host the relay. It does not include voice, video, webcam chat, or a mobile app.

The main difference

Kosmi focuses on an all-in-one social room. WatchUp is a desktop browser extension that synchronizes supported players and provides encrypted live text chat.

Honest limitations

WatchUp requires installing a browser extension and currently only runs on desktop PCs. It includes end-to-end encrypted live text chat, but no webcam, voice, or video chat. It also does not offer built-in games.

In short

Choose Kosmi for its integrated social-room features. Choose WatchUp for account-free, open-source desktop synchronization, encrypted live text chat, and optional relay self-hosting.