Stash is an offline-first Android music player that syncs your liked songs, playlists, daily mixes, and discover mixes from both Spotify and YouTube Music into a single unified local library. Tracks are downloaded as high-quality FLAC audio.

Your Spotify + YouTube Music library, offline in FLAC for free.
Stash is an offline-first Android music player that syncs your liked songs, playlists, daily mixes, and discover mixes from both Spotify and YouTube Music into a single unified local library. Tracks are downloaded as high-quality FLAC audio.
Stash is not an online streaming service. It's a personal-library tool for people who already have Spotify or YouTube Music accounts and want their library available offline on their terms. Studio quality tracks, they're yours to keep.
Features
? Offline everything — tracks download as high-quality lossless audio
? Bulletproof matching — finds the right version of tracks 99% of the time
? Custom playlists — create your own playlists and save tracks to them from anywhere.
? Spotify & YT sync preferences — choose exactly which playlists, liked songs, daily mixes, and discovery mixes to sync. Individual toggles for each. Don't want Daily Mix 3? Turn it off.
? Expanded Spotify mix detection — Release Radar, Discover Weekly, On Repeat, Daylist, Repeat Rewind, Time Capsule, and Daily Mixes 1-6 are all automatically detected when available. Each gets its own toggle.
? Refresh vs Accumulate sync modes — mixes can either replace their contents each sync (Refresh) or stack new tracks on top of what's already there (Accumulate). Your call.
? Parallel downloads — 8 simultaneous tracks. Background sync runs as a foreground service so it actually finishes with the phone locked.
? High-res album art
? Automatic update notifications — checks GitHub for new releases daily and notifies you when one is available.
? Full equalizer — 5-band EQ with presets, bass boost, and virtualizer
? Spotify sign-in built in — just log into Spotify inside the app
? Private by design — credentials encrypted with AES-256-GCM, no servers, no telemetry, nothing leaves your phone
? Free and open source — no subscriptions, no ads, GPL-3.0
? Untouched apk with Original Hash Signature
? No changes were applied
? LanguagesFull Multi Languages
? CPU architecturesarm64-v8a, armeabi-v7a, x86, x86_64
? Screen DPIs160dpi, 240dpi, 320dpi, 480dpi, 640dpi
Good to know
- After you move your songs into a new folder arrangement, the old empty folders stay behind. It's safe to delete them.
- If your music is on an SD card, moving it into a new arrangement hasn't been tried on a real phone yet. If you try it, let us know how it goes.
- Connecting Last.fm takes two steps. If it doesn't work, start again and finish both steps right away.