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Reminduck vs Planify: catalog facts
Reminduck	Planify
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source.
Linux	Linux
Simple, single-purpose reminder app Playful design with a quacking duck	Syncs with Todoist, Nextcloud and CalDAV Native GNOME design
Linux only Basic feature set compared with full task managers	Linux only Designed around GNOME, so it looks out of place on other desktops
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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