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Notification Dictionary vs Ciyue: catalog facts
Notification Dictionary	Ciyue
Free Free and open source under the MIT license.	Free Free and open source under the MIT licence; AI translation uses your own provider.
Android	Windows, Linux, Android
Works in any app that supports text selection Definitions appear without leaving the current app	Opens MDX and MDD dictionary files Searches multiple dictionaries at once
Android only Depends on each app supporting text selection	You supply the dictionary files yourself AI translation depends on a third-party service
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it 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.