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SoundAura vs Soothing Noise Player: catalog facts
SoundAura	Soothing Noise Player
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under GPL-3.0-only.
Android	Android
Plays many tracks at once with individual volume Small download since no sounds are bundled	Mix 15 noises at individual volumes Import custom sounds and save profiles
No built-in sounds; you must supply your own files Android only	Small single-purpose app Limited default sound library
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0-only
Not stated if an account is needed	No account 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.