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Noice vs SoundAura: catalog facts
Noice	SoundAura
Freemium Free to try, with the site promoting a paid offering.	Free Free and open source under the Apache 2.0 licence.
Android, Web	Android
Mix several sounds with separate volume controls Sleep timer and Chromecast support	Plays many tracks at once with individual volume Small download since no sounds are bundled
Source repository not updated since August 2024 Web version is only a prototype	No built-in sounds; you must supply your own files Android only
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it 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.