Get a step-by-step path
to master a textbook
Ritsu breaks each chapter into a Knowledge Map of bite-size concepts,
explains each, and turns any into personalized, interactive
practice in seconds — until you've mastered the whole book.
The fluency illusion
Fluent reading feels like learning. It isn't.
The smoother a chapter reads, the less it asks of your brain — and a week later, this is what's left.
A good chapter flows. Every sentence lands as you read it — so your brain files the whole thing as understood, and you close the book feeling ready.
You're not reading. You're consuming. Words go in; nothing has to come out. Fluency is a feeling, not a skill — you recognized each idea as it slid past, but you were never once made to produce one. Psychologists call it the fluency illusion, and it's why smart people walk into an exam and blank.
There's only one way out: stop consuming the chapter. Start being asked.
That's not the page fading. That's you.
The workflow
From a chapter to a map you've mastered.
chapter-07-llms.pdf
38 pages · analyzing…
01 · Drop in the chapter
Drop in the chapter
Your textbook chapter — a PDF, scanned pages, or an ebook export. That's the only manual step.
chapter-07-llms.pdf
38 pages · analyzing…
Ritsu maps it into concepts
Ritsu reads the whole chapter and breaks it into bite-size Points of Knowledge — wired in the order they build on. That's your Knowledge Map.
Practice any concept — in seconds
Tap a node, pick a command. Ritsu spins up a quiz, an explain-back, a worked problem — each engineered by learning science, aimed where you're weak.
Watch your map light up
Every activity updates your Knowledge Map Score. Node by node, you see what you've mastered — and what's still dim.
Master the map. Master the book.
When every node is lit, you don't just recognize the material — you can produce it. Cold, under exam pressure.
Keep it, past the forgetting curve
Ritsu brings each concept back right before you'd forget it. Master a chapter today, still own it on exam day.
Pedagogy, packaged
Every command packs a proven learning method.
Pick any concept on your map. Six commands take it from “I sort of get it” to “I can write it from memory” — each one asking more of you than the last.
Understand
Ritsu explains the concept from the ground up — the intuition, not just the definition.
Recall
Retrieval practice: the most proven way to make it stick. Pull it back out, cold.
Drill
The parts that have to be automatic, turned into cards you'll actually run.
Explain back
The Feynman test. Say it in your own words — that's where the gaps show.
Apply
A real problem on the real concept. Knowing it and using it aren't the same.
Create
Write it out in full. The highest bar there is: if you can write it, it's yours.
That's Bloom's taxonomy, climbed one command at a time. And the science isn't a slogan — it's a flag on the command:
/quiz --bloom="auto"
40+ commands, all built like this.
Knowledge Map
You always know exactly where you stand.
Ritsu scores every Point of Knowledge as you work. The dim ones are exactly what you haven't got yet — so you never have to guess what to study next.
Every concept, scored.
Not one vague % for the chapter — a mastery score per Point of Knowledge.
Dim = what will bite you.
The concepts you haven't got yet, named. That's the list nobody else gives you.
The whole chapter, one screen.
No more guessing what to study next — the map tells you.
Spaced review
Master it today. Still have it on exam day.
You forget most of what you learn within days — Ebbinghaus measured it in 1885. Ritsu brings each concept back right before it fades, so the work you did today is still there when it counts.
Five minutes tonight. Three tomorrow. Two in three days.
Built from your chapter — no cards to make.
When you're stuck
The moments you actually get stuck — and what to type.
/eli5 → /analogy → /intuition — a textbook gives you one explanation. Ritsu gives you as many as it takes — same concept, different angle, until one lands.