Launching today

Hotaru
AI flashcards from your notes, with spaced repetition
1 follower
AI flashcards from your notes, with spaced repetition
1 follower
Turn your notes, photos and PDFs into flashcards in seconds, then remember them for good. With Apple Intelligence, the cards are written on your iPhone and your material stays on the device. FSRS, the spaced repetition algorithm behind Anki, shows each card right before you'd forget it. Ready-made decks, practice tests and speaking practice are there when you need them. Studying is free, forever. No ads, no tracking.






Hi Product Hunt 👋
Hotaru is a flashcard app for iPhone and iPad that turns what you already study into cards, then brings each card back right before you'd forget it.
What it does:
Paste notes, snap a textbook page or open a PDF, and Apple Intelligence writes question-and-answer cards on your iPhone. Your material stays on the device (on iPhones that can't run Apple Intelligence, there's an opt-in cloud option).
FSRS, the open spaced repetition algorithm used by Anki, decides when each card comes back.
Ready-made decks for languages, science, medicine, programming and exam prep, plus practice tests and speaking practice.
Import from Anki, Quizlet or CSV, sync with Sign in with Apple, or use it with no account at all.
Studying is free, forever, with no ads and no tracking. Hotaru Pro adds unlimited decks and AI creation, practice tests, speaking practice and full insights.
About the name: hotaru means firefly in Japanese, after the old story of Che Yin, a boy who studied by firefly light.
I'd love your feedback, especially on the cards it writes from your own notes and on what would make you open it every day. Happy to answer anything below 🙌