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Retro Music Player vs Booming Music: catalog facts
Retro Music Player	Booming Music
Free Free and open source under the GPL 3.0.	Free Free and open source under the GPL-3.0.
Android	Android
Many themes and now playing layouts Gapless and crossfade playback	Material You design with customization options Word-by-word synced lyrics
Android only Plays local files only, no streaming services	Plays local files only, no streaming services Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0-only
Not stated if an account is 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.