Kavke: knowledge that sticks

Rebell sp. z o.o.

In-app purchases

About this app

Kavke turns any source — a YouTube video, PDF, photo of handwritten notes, voice recording or an Anki deck — into a ready-to-study course with questions you answer from memory. This is not a shortcut for the night before.

Lasting knowledge takes effort from you — moments of focus, attempts to actively recall, the moment you search your head for an answer instead of glancing at the text. That moment is where knowledge locks in — not a bug to remove, but the reason it works. Passive reading gives you the illusion that you "know it"; only pulling it from memory tests whether you really do. Our job: break the material into small units, schedule each review for the moment you'd start to forget (FSRS), and automate everything you needn't hold in your head. Yours: a few minutes of real focus a day. If you're after something that learns for you — this isn't it. If you want to remember for years, not for tomorrow — finally, yes.

WHO IT'S FOR
• Med, law, biology and pharmacy students — hundreds of definitions and mechanisms that must stay for years
• Certification and professional-exam candidates — pass and STILL remember it
• Self-taught language, programming and technical learners — studying for themselves, long-term
• Anyone whose appetite for learning is back — history, philosophy, a language. Just for its own sake
• Big exam months away? Spread it out — spacing beats cramming (no miracle by tomorrow)

Kavke teaches with text, questions and an audio narrator (you can add images to lessons; Anki import keeps them). It works best on material you can put into words. If your subject lives in pictures (anatomy atlases, geometry) — this isn't the tool for you.

WHAT MAKES US DIFFERENT
Cognitive-science mechanisms documented for decades:
• Retrieval practice (active recall) — you learn when you PULL knowledge from memory, not when you re-read it
• Desirable difficulties — what feels harder during study builds stronger long-term knowledge. Easier ≠ better
• Spacing effect (FSRS-6) — a question returns right when you're starting to forget it

HOW IT WORKS
1. Pick a source: YouTube, text, PDF, photo, voice, Anki deck, a topic — or just describe what you want to learn in the chat
2. AI prepares the structure, lessons and questions — the material to study, not ready-made knowledge
3. The rest is on you: read or listen, then answer from memory
4. Reviews come back at the right moment (FSRS-6)

FROM YOUR AI CHATS
Studying in an AI chat? Connect Kavke and say "turn this into a course" — the conversation becomes lessons and questions in the app. Works with Claude, ChatGPT, Perplexity and Mistral — use your favorite, or the one whose strengths best fit the task.

SMART REVIEWS
FSRS-6 — the latest spaced repetition standard (better than SM-2 in Anki). You return less often, but when it counts. Track mastery, streaks and your AI week recap in My stats.

7 QUESTION TYPES: multiple choice, true/false, fill-in-the-blank, open-ended (AI-validated), ordering, matching — AI picks the type. AI graded you wrong? One tap — "My answer was correct" — fixes the verdict. Feynman mode: explain it in your own words, AI gives feedback.

AI NARRATOR
Listen to lessons on the go — in 20 languages — then answer from memory. Part of the recall loop, not a passive podcast.

EVERYWHERE
Phone, tablet and web (app.kavke.com) — same account, same progress. UI in English, German and Polish.

PRIVACY
• Encrypted (TLS 1.2+), data stored in the EU (Supabase, Frankfurt); narrator audio may be generated outside the EU
• Delete your account anytime, 30-day recovery window
• Full policy: https://kavke.com/privacy

FREE TIER: 3 courses, 30 lessons/month, all features, no ads.
PRO: no limits. 6.99 EUR/month.

ACCOUNT: start as a guest — no sign-up. Sign up later (email or Google) and keep your progress. Age 16+ (GDPR).
CONTACT: [e-mail]

Kavke is built by Rebell sp. z o.o. in Poland. A small team, for people who want to remember for years — and ready to put in real work.

What’s new

What's new:
• Promo codes — redeem a code in the paywall or your profile to unlock PRO. Code links now open straight in the app.
• Better questions: faulty ones are filtered out before the quiz, and lessons show honestly when questions are still being prepared.
• Add your own accepted answers so synonyms count as correct.
• When the AI grader isn't sure, mark your answer as correct in one tap.
• Stats no longer count questions you reported or deleted.