Flashka

Flashka is an AI-powered flashcard maker and spaced-repetition study app used by more than 1.2 million students worldwide. The workflow starts from your own material: upload a PDF, handwritten notes, lecture slides or photos, or highlight a passage with the Magic Highlight tool, and Flashka generates study content in seconds instead of requiring manual card typing. Four card types are offered: basic question-and-answer cards, cloze-deletion fill-in-the-blank cards, term-and-definition cards and multiple-choice question cards, and every generated card can be edited afterward with rich formatting such as bold and italic text. For visual subjects like medicine, image occlusion flashcards let learners hide and reveal parts of anatomical structures, medical charts and diagrams to test themselves interactively. The review engine is based on the SM2 spaced-repetition model, the same algorithm family that powers Anki, and Flashka describes it as enhanced with flexibility to fit different learning needs; it schedules each card for review just before you are likely to forget it, which is the core of the anti-cramming method. Auto-generated quizzes complement the decks, with explanations delivered for every mistake, and a Type-to-Answer mode for languages forces active recall by typing responses. A built-in AI tutor named Professor Ka sits on top of the content: it can explain a card you did not understand, create personalized memory stories, supply examples or generate supporting images, all inside the study flow. Subject coverage spans ten areas including medicine, math, languages, law, chemistry, biology, engineering, arts, business and history, with tailored card styles per subject, and the tutor speaks any language, serving students from more than 100 countries. Flashka frames its method around active recall and spaced repetition, two of the best-evidenced techniques in learning science, and markets itself on helping students memorize up to 200 percent better while studying less. The service is free to start, and a paid Wizard subscription unlocks higher AI generation capacity, with the app distributed through the web and native iOS and Android apps.