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Flip 2 DND vs PingOff: catalog facts
Flip 2 DND	PingOff
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0 or later.
Android	Android
Toggles Do Not Disturb with a single physical gesture Optional screen-off-only mode to avoid accidental triggers	Switches Do Not Disturb automatically per app Simple, single-purpose design
Android only Does one narrow job and offers no scheduling	Android only Young project with a narrow scope
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
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.