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Notification Dictionary vs freeDictionaryApp: catalog facts
Notification Dictionary	freeDictionaryApp
Free Free and open source under the MIT license.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Works in any app that supports text selection Definitions appear without leaving the current app	Definitions and example sentences for English words Wiktionary lookups from other languages into English
Android only Depends on each app supporting text selection	Depends on external online dictionary APIs Wiktionary lookups are case-sensitive
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
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 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.