We started TandemParty because we were tired of unreliable synchronization in existing watch-party solutions. Playback would drift, users would end up at different timestamps, and reconnecting after a network interruption often caused problems. We first built a prototype in Python to validate the idea and see whether we could achieve sufficiently fast synchronization. The prototype worked well enough to prove the concept, but as we pushed for lower latency and better stability, we found that Rust could deliver significantly better performance. We rebuilt the backend in Rust and focused on real-time synchronization, low latency, reliable reconnection, and efficient caching. We also developed features such as a QR-based phone remote, multi-platform support, server selection based on ping, and the ability to continue watching across devices. The project evolved from a simple synchronization prototype into a full watch-party platform designed to make watching together feel as close as possible to watching in the same room.

TandemParty

TandemParty - watch movies, TV shows, video, together.

TandemParty - watch movies, TV shows, video, together.