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Blanket vs SoundAura: catalog facts
Blanket	SoundAura
Free Free and open source under the GPL.	Free Free and open source under the Apache 2.0 licence.
Linux	Android
Built-in set of nature, city and noise sounds Saveable presets and custom sounds	Plays many tracks at once with individual volume Small download since no sounds are bundled
Linux only No timer or scheduling described	No built-in sounds; you must supply your own files Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: Apache-2.0
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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