Kioku turns any topic, PDF, or set of notes into smart flashcards — then schedules each one at the exact moment you're about to forget it. Less cramming, more knowing.
Describe a topic, paste your notes, or drop in a PDF — Kioku writes accurate, well-structured cards for you in seconds. Choose Q&A, cloze deletion, or reverse cards, and edit anything before you save.
The same modern spaced-repetition algorithm power-users swear by. Kioku shows each card right before you'd forget it, so reviews stay short and retention stays high.
Hit record and Kioku transcribes your class live, word for word — then turns the transcript into a clean study guide or a ready-to-review deck.
Paste a YouTube video or any web page. Kioku pulls the real transcript or article text and builds a full study pack — flashcards, a quiz, and a summary.
Turn a lecture PDF, a photo of your notes (OCR), or pasted text into a full deck. Long documents are split automatically so nothing gets dropped.
Full mock exams for the SAT, AP, MCAT, or your finals — timed, with difficulty that adapts to your accuracy and speed, a predicted score, and AI explanations for every miss.
Stuck? Ask for a real-world example, a simpler breakdown, an analogy, or a memory hook — without leaving your review.
Attach real audio or record your own, with natural text-to-speech and auto language detection — built for language learners.
Write formulas in LaTeX that render beautifully, add images and hints, and tap any word for an instant AI definition while you study.
Send any deck to a friend as one compact code — they paste it and the whole deck, cards and tags included, lands in their collection.
A full dashboard: a year-long activity heatmap, your review forecast, hardest cards, and your weakest decks and topics so you know exactly what to study next.
Daily goals, levels, 70+ achievements, and streak freezes keep you coming back — with cloud sync and an auto-sync toggle across every device.
Type a topic, paste notes, or upload a PDF. Kioku's AI builds your cards — or make them by hand. It's your call.
Flip, grade, and move on. Type-the-answer and quiz modes keep it active, and the schedule does the heavy lifting.
Cards you know come back less often; tricky ones come back sooner. Your dashboard shows retention climbing over time.
Kioku reads your prompt, notes, or PDF and writes clean, accurate, atomic cards — the kind that actually stick. Pick a style, review the draft, and you're studying in under a minute.
Every card has a tutor on call. Tap a word for an instant definition, or hit a help button and Kioku explains it your way — with an example, a breakdown, an analogy, or a memory trick.
Plus a full “Teach me this” mode that walks you through any concept, step by step — right inside your study session.
Flip, grade, move on. Type-the-answer and quiz modes keep recall active, while FSRS-5 quietly decides when each card comes back.
Pick the SAT, an AP, the MCAT, or your finals. Kioku writes a timed exam that gets harder when you're fast and accurate, eases off when you miss, and predicts your real-exam score.
Hit record and Kioku writes down every word live. When the lecture ends, turn the transcript into a clean study guide or a ready-to-review deck in one tap.
Paste a YouTube link or any article. Kioku pulls the real transcript or page text — not a guess — and builds flashcards, a quiz, and a summary you can save.
Drop in a lecture PDF, a photo of handwritten notes, or pasted text. Kioku reads it, splits long documents, and drafts a deck you can edit.
A full dashboard: a year-long activity heatmap, your review forecast, hardest cards, weakest tags, and retention climbing over time.
Kioku combines the techniques cognitive science backs — and wraps them in something you'll actually open every day.
Spaced repetition is the most well-studied learning technique there is. Kioku schedules every card with FSRS-5 so you spend your time on what you're about to forget — not what you already know.
Writing good cards is half the battle. Kioku's AI drafts clear, atomic cards from your own material — and flags weak or confusing ones so your deck stays sharp.
Typing answers and taking AI-built practice exams force real retrieval — the kind that builds durable memory, instead of the false confidence of just rereading notes.
Streaks, XP, and daily goals turn a study habit into something you want to keep. Miss a day? Streak freezes have your back so one slip doesn't undo your momentum.
Your decks, progress, and stats live in your account and sync across every device — study on your laptop, review on your phone, pick up right where you left off.
From kanji with audio to accounting formulas in LaTeX, Kioku handles real subjects — images, hints, cloze deletions, and instant word lookups included.
Everything you might want to know before you start.
Make an account and study today — no card required.
Everything you need to actually learn.
80% off while we're in early access — locked in for life.