The music playerthat belongs to you.

Bring your own library, keep it available offline, and listen without turning music into another account you have to manage.

macOSiOSComing soon

Sidus for macOS showing the music library, Player AI, and playback controls

A music collection that gets more personal every time you play.

Quiet by default. Useful offline. Designed to keep the music, not the app, at the center.

Quick import

Add files or a folder without rebuilding your collection.

Visual library

Browse albums the way you remember them. No rows, no feed.

Offline first

Your local music remains ready when the network is not.

A real queue

Edit what plays next without losing your place.

Across your devices

Keep the active player and playback state clear on every screen.

Player AI

Opt-in

Ask for help, review the plan, and approve every playlist change.

One player. A visible AI workflow.

Build a playlist, review the plan, and apply it when ready.

Sidus home view on macOS with the local library and Player AI

Access to every song. Ownership of none.

Streaming made music abundant. It also made years of listening dependent on the next payment.

Your library should outlive the subscription.

Sidus stays useful without an account or internet connection on Mac and iPhone.

Offline-firstNo required accountPrivate by default
Sidus now-playing screen on iPhone with album artwork, playback controls, and karaoke preview
Now playing
Saved in sheet for choosing playlists and creating a new playlist for the current song
Saved in
New playlist dialog on iPhone with a playlist name ready to create
New playlist
Quick save enabled so future liked songs are saved to a chosen playlist
Quick save
Sidus karaoke screen ready to generate timed lyrics when a song has no lyrics
No lyrics
Sidus starting on-device analysis to create timed lyrics on iPhone
On-device analysis
Sidus karaoke screen with synchronized lyrics on iPhone
Karaoke

Before you press play.

Does Sidus require an account?

No. Local playback, your library, playlists, artwork, and portable state work without a Sidus account.

Can I listen without internet?

Yes. Music stored on your device remains available when online services are unavailable.

Where does my music come from?

Sidus is designed for music you own or are authorized to access, including local files, folders, and supported file providers.

Is Player AI required?

No. Player AI is opt-in. The player and library remain useful with every online connector disabled.

Which devices are supported?

Sidus is being built for iPhone, Mac, and Android, with a shared focus on reliable local playback.

Put your music at the center again.

Join the waitlist and be the first to know when Sidus is ready.

macOSiOSComing soon