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Aard 2 vs Ciyue: catalog facts
Aard 2	Ciyue
Free Free and open source under the GPL-3.0.	Free Free and open source under the MIT licence; AI translation uses your own provider.
Android	Windows, Linux, Android
Offline Wikipedia and dictionary lookups Bookmarks and lookup history	Opens MDX and MDD dictionary files Searches multiple dictionaries at once
Dictionary files must be downloaded separately Interface is plain	You supply the dictionary files yourself AI translation depends on a third-party service
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	No account needed
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.