A polished mobile and web app that connects to a user's self-hosted music collection (or syncs local files directly) and delivers a Spotify-quality listening experience—complete with album art, metadata auto-tagging, mood-based playlists, play counts, lyrics, and intelligent offline caching. The app syncs only frequently-played tracks to the device automatically, preserving storage while keeping favorites available offline.

Streaming subscription prices have spiked significantly in 2024-2025, driving a wave of users back to personal music libraries and self-hosting. Open-source tooling (Navidrome, Jellyfin) has matured enough to serve as backends, creating demand for a premium front-end client layer that packages everything with a consumer-grade UX.