Foil Flashcards

Foil is a flashcard app for long-term learning on iPhone. Create, import, and organize your own cards, then plan daily study and review with SM-2 or FSRS spaced-repetition scheduling. Stay focused while you review • Reveal the answer, then rate your recall with Again, Hard, Good, or Easy • Put important cards into a priority queue for the current study session • Work with rich text, hints, tags, review history, speech, and long-form cards Bring your existing material • Import APKG, COLPKG, UTF-8 CSV, and Foil backup files • Preview, map, and validate content before it enters your library • Maintain your collection with filters, batch actions, and similar-card detection Prepare study material with AI prompts • Choose a scenario in Foil and copy its prompt • Generate structured CSV in an external AI tool • Return to Foil to preview, import, and start reviewing Local first, with data you control • Keep studying from your local library without a network connection • Sync decks, cards, review history, and tags through your private iCloud database • Use automatic and manual backups, pre-restore snapshots, import/export, and trash recovery The free version supports up to 50 active cards. A one-time Permanent Unlock removes the active-card limit permanently. No subscription.