Flash Stack vs Recall

Flash Stack helps you build simple flashcard decks, review what is due, and keep track of your progress without clutter. It is especially useful for GCSE revision, A Level revision, mock exam prep, and steady day-to-day study. Create custom decks for topics, formulas, essay plans, key quotes, definitions, case studies, dates, vocabulary, and revision cards for the subjects you actually study. Add cards one at a time, bulk import larger sets, or export a deck when you want to back it up or move it elsewhere. Study sessions focus on the cards that are ready for review. Reveal each answer, rate how well you remembered it, and Flash Stack schedules the next review using the SM-2 spaced repetition approach. Features: - Create unlimited custom decks - Add and edit question-and-answer cards - Bulk import cards from text, CSV, TSV, or JSON files - Export decks as JSON - Review due cards in focused study sessions - Rate cards as Again, Hard, Good, or Easy - Track review activity, retention, streaks, and upcoming workload - Set an optional daily reminder - Built with support for VoiceOver, Dynamic Type, and Reduce Motion - Clear labels, spoken summaries, and accessible study controls - Works without an account Whether you are preparing for GCSE mocks, A Level papers, class tests, or personal study goals, Flash Stack is designed for quick daily revision. Use it for science facts, maths formulas, history dates, English quotes, languages vocabulary, and other exam content you need to remember properly.

Recall turns your study material into flashcards — and helps you actually remember them. Snap a photo of a textbook page or your notes, import a PDF, or record a lecture, and Recall's on-device intelligence writes clear question-and-answer cards for you. Then a proven spaced-repetition schedule brings each card back at just the right moment, so knowledge sticks — for exams and beyond. EVERYTHING STAYS ON YOUR DEVICE Recall makes zero network requests. No account, no sign-up, no tracking, no cloud server — try it in Airplane Mode. Your notes, cards, and progress never leave your iPhone. Pay once; there is no subscription. MAKE CARDS FROM ANYTHING • Scan pages with the camera, or import photos, PDFs, or text notes • Record or import an audio lecture and have it transcribed into cards • Add image-occlusion cards — hide the labels on a diagram and reveal them one at a time • Text is read and cards are written on-device with Apple Intelligence STUDY THAT WORKS • Modern FSRS spaced repetition schedules every card for the best recall • Exam mode makes sure every card is seen before the big day • A quick multiple-choice quiz mode • Tap Explain for an on-device explanation and a memory hook • Warm, encouraging progress — a streak, retention, and a mastery map, never guilt FITS YOUR LIFE • Home Screen and Lock Screen widgets show what is due at a glance • Share text, PDFs, or photos into Recall from any app • Send a whole deck to a classmate as a shareable file • Siri: "Study my Recall cards" • Optional private sync across your devices through your own iCloud — Recall's servers never see your data • Encrypted local backup Recall is built for students, language learners, and anyone who wants to remember what they read — privately, and for good.