Built around the music.
Atmosphere first. Everything else stays out of the way.
Immersive atmosphere
Designed to complement your music without pulling attention away from it.
Music-reactive visuals
Smooth movement and evolving visuals respond to the sound in real time.
Native macOS performance
Built with Swift and Metal for responsive, high-performance rendering.
See sound take shape.
A real visual render from an early Sibi Similis build.
Visual output from the current beta.
Help shape Sibi Similis
This is an early build and some features will change or break. Feedback from music fans, artists, developers, and curious testers will help guide what comes next.
Early build access
The current beta link is available for a limited TestFlight.
Useful feedback includes
- Performance or crashes
- Visual quality
- Music responsiveness
- Ease of use
- Feature ideas
- macOS compatibility
Occasional updates
Join the tester list
Get occasional build updates, release notes, and testing requests.
Joining is optional and does not affect beta download access.
Email address
No spam. Unsubscribe whenever you like.

