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Really Basic Vocab vs Flash Deck: catalog facts
Really Basic Vocab	Flash Deck
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL 3.0 licence.
Android	Android
Clear filing box, deck and card structure Export and import of filing boxes as backups	Quick card entry with Save and Add Another Reversible cards for testing both directions
Android only Deliberately basic feature set	Android only Simpler than full spaced-repetition apps such as Anki
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
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.