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Soothing Noise Player vs SoundAura: catalog facts
Soothing Noise Player	SoundAura
Free Free and open source under GPL-3.0-only.	Free Free and open source under the Apache 2.0 licence.
Android	Android
Mix 15 noises at individual volumes Import custom sounds and save profiles	Plays many tracks at once with individual volume Small download since no sounds are bundled
Small single-purpose app Limited default sound library	No built-in sounds; you must supply your own files Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	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 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.