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FloFla Cards vs Really Basic Vocab: catalog facts
FloFla Cards	Really Basic Vocab
Free Free and open source under the GPL-3.0 or later.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Cards appear over other apps without opening a study app Review interval is configurable	Clear filing box, deck and card structure Export and import of filing boxes as backups
Android only Overlay pop-ups can interrupt other apps	Android only Deliberately basic feature set
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	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.