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NotallyX vs ImapNotes3: catalog facts
NotallyX	ImapNotes3
Free Free and open source.	Free Free and open source under the GPL-3.0.
Android	Android
Notes and checklists in a minimal interface Labels for organizing notes	Syncs through any IMAP mailbox you already have Notes stored as standard HTML emails
Android only No sync service of its own	Needs an email account with IMAP access Android only
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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