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Simple Reminder vs VergissNix: catalog facts
Simple Reminder	VergissNix
Free Free and open source under GPL-3.0-or-later.	Free Free and open source under GPL-3.0.
Android	Android
Quick Settings tile for adding a reminder Supports typed times and custom dates	Creates short reminders for everyday tasks Available through F-Droid and GitHub releases
Android only	After changing a reminder's date or time, its old notification may still remain active
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-only
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 8, 2026	Official website Full listing and sources Checked October 8, 2026

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