Compare software

Pzizz vs Noice: catalog facts
Pzizz	Noice
Freemium A free version is available, with a paid full version.	Freemium Free to try, with the site promoting a paid offering.
Android	Android, Web
Separate modes for night sleep and short naps Combines soundscapes with voice cues	Mix several sounds with separate volume controls Sleep timer and Chromecast support
Full features need a purchase Not a sleep tracker; it does not measure sleep	Source repository not updated since August 2024 Web version is only a prototype
Downloadable app	Downloadable app, Web application
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it 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.