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Etar vs ShiftSwift: catalog facts
Etar	ShiftSwift
Free Free and open source.	Free Free and open source under the GPL 3.0 licence.
Android	Android
Open source with an active community Clean Material Design interface	Shift blocks add several shifts at once Built for irregular working hours
Android only Sync depends on the calendar accounts set up on the phone	Android only Little documentation beyond the repository
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	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 September 24, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.