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Flash Deck vs Brainscape: catalog facts
Flash Deck	Brainscape
Free Free and open source under the GPL 3.0 licence.	Freemium Free to start, with paid upgrades for extra features.
Android	Android, iOS, Web
Quick card entry with Save and Add Another Reversible cards for testing both directions	Large catalog of ready-made decks Confidence-based spaced repetition
Android only Simpler than full spaced-repetition apps such as Anki	Proprietary, cloud-based decks Some features sit behind a paid upgrade
Downloadable app	Downloadable app, Web application
Open source	Closed source
License: GPL-3.0-only	License not stated
Not stated if an account is needed	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 September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.