Subtracks is an open source Android client for Subsonic-API-compatible servers, including Navidrome, gonic, Airsonic, Nextcloud Music and Subsonic itself. It is built natively with Kotlin and Jetpack Compose, and gives you clean, convenient access to your music library in the style of a modern media player.

Features
- Home tab with recently played, most played, recently added and rediscover rows, plus genre and decade shortcuts
- Album and artist artwork, shown full-resolution in the detail and now playing views
- Offline downloads, with per-album, artist and playlist progress, download quality and a metered-connection toggle
- Search across albums, artists, playlists and songs, with per-list sort and filter controls
- Gapless playback, an editable queue you can reorder and jump through, and loop and shuffle modes
- Multiple server support with quick switching
- Stream quality (bitrate and format) settings for Wi-Fi and mobile
- Scrobbling, starred items and long-press context menus
- Media notification and headset/Bluetooth controls

The full library is mirrored at sync, so browsing, searching, sorting and filtering work offline. Subtracks is free software (GPL-3.0), has no ads and no telemetry, and uses only free/libre dependencies.