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ntodotxt vs Todosian: catalog facts
ntodotxt	Todosian
Free Free and open source under the MIT licence.	Free Free and open source under the Apache-2.0 licence.
Android	Android
Uses the open todo.txt plain-text format Works locally without any account	Works directly on existing Markdown files No account or database import
Android is the only listed platform No hosted sync service of its own	No built-in sync, so a separate sync tool is needed Android only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: Apache-2.0
No account needed	No account needed
Works offline	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.