Cerebri

Cerebri turns any study material into flashcards in seconds — entirely on your iPhone or iPad, with no uploads, no cloud AI, and no account required. Every PDF, photo of notes, and class recording is processed on-device by Apple Intelligence. Your material never leaves your hands. CAPTURE ANYTHING Import a PDF or Word doc, snap a photo of handwritten notes, or drop in a lecture recording. Audio and video are transcribed and converted to a flashcard deck automatically — all on-device. STUDY SMARTER WITH SPACED REPETITION The proven SM-2 algorithm schedules each card just before you'd forget it. Spend time on what you don't know, skip what you do. AN AI TUTOR WITH NO USAGE CAP Miss a card? Get a clear 2–3 sentence explanation instantly. Want to go deeper? Chat with a tutor that knows your entire deck — unlimited questions, on-device, no per-query fees. PRIVATE BY DESIGN There is no server. Nothing you import or study is ever uploaded. Cerebri works fully offline. $6.99 ONCE. YOURS FOREVER. One payment unlocks everything, permanently. No subscription, no per-scan fees, no AI usage limits. Free features: manual card creation, unlimited decks, card-flip study, PDF/DOCX flashcard extraction, export your decks to PDF/CSV and an inline tutor explanation for difficult cards. Premium ($6.99 one-time) unlocks: SM-2 spaced repetition, photo / audio / video flashcard creation, and the unlimited deck-scoped AI tutor chat. AI features require a device with Apple Intelligence.