Kioku Cards

Have you ever studied for hours on end and then forgotten everything during the exam? The problem isn't your memory. It's your method.

Kioku uses neuroscience-based spaced repetition to show you each piece of content exactly when you're about to forget it—truly consolidating knowledge instead of rereading the same material dozens of times.

Real college entrance exam questions
Thousands of official questions from ENEM, FUVEST, UNICAMP, and UNESP, organized by subject and topic. Study by specific subject or simulate a timed exam under real college entrance exam conditions.

AI-powered flashcards
Automatically transform any content into flashcards. AI extracts the concepts that truly matter—never rote memorization of questions, always lasting knowledge.

Integrated AI tutor
Stuck on a concept? Ask for a real-world example, a memory analogy, or a new explanation, without leaving the review.

Audio and visuals per card
Listen to your flashcards or add AI-generated illustrations to visually reinforce what you're studying.

Progress you can see
Real retention statistics, study day sequence, achievements, and the option to track your friends' progress.

No more studying a lot and remembering little. Kioku is for those who want to study less and remember more.