Pulsar
A shared music broadcast for two homes — or more. Music plays in sync at every home. As if you were in the same room.
Periastron
The shared air. Drop a track or playlist link to the Telegram bot and it starts in every home at once, precise to a fraction of a second.
Voice notes between tracks
Record a voice note to the bot and it plays between songs, like a late-night radio DJ. Privately to one home or to everyone.
Apoastron
Everyone listens to their own. /inject drops a track straight into your partner's queue.
Works with Spotify
Native integration: your Pulsar shows up in Spotify on your phone like a regular speaker. A Premium account in each home, that's it.
Yandex Music — coming soon
In the works: a shared broadcast between homes on different services. Couples and groups where one lives on Spotify and another on Yandex will listen together and share links from either service.
Your account, your home
Each home streams from its own Spotify under its own account. Audio and passwords never leave your home; only commands travel between homes.
Three steps to the shared air
The bot @barycenter_bot → /create. Your barycenter is born and the bot hands you a pairing code.
Download, drag to Applications, type the code into the window. Zero configuration.
/share gives a one-time link for your partner or friends. Their homes join the same way: a code into the window.
Verifiable honesty
Every Pulsar build is signed, notarized by Apple and carries cryptographic proof of origin (SLSA). Anyone can verify the binary was built exactly from the open source:
gh attestation verify Pulsar.dmg --owner relux-works
Source code: github.com/relux-works/barycenter