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Kasette vs Retro Music Player: catalog facts
Kasette	Retro Music Player
Free Free and open source under the BSD-3-Clause licence.	Free Free and open source under the GPL 3.0.
Android, Web	Android
No network access, accounts or analytics Plays common formats including FLAC and Opus	Many themes and now playing layouts Gapless and crossfade playback
Very new project with few users Only plays files you import yourself	Android only Plays local files only, no streaming services
Downloadable app, Web application	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0-only
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.